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Gerbil — Care & Reference Manual
LLM-refined manual (v2 pipeline, kimi, 2026-08-04; docs/MANUAL_V2_DESIGN.md). This manual assembles the verified fact blocks in Pet Data Station that mention gerbil, organised along a pet owner's journey. Every quoted fact is reproduced verbatim from its cited first-hand source ([n] superscripts; see References, each tagged with a computed trust grade per docs/topic_grading_guide.md) and is independently checkable. Guide sections (checklists, red-flag box) are orientation prose in which every factual sentence carries its own [n]; derived-summary blocks from non-Open-Access sources keep their Paraphrased derived summary mark. Mis-sectioned, duplicate, off-topic and image-residue fragments were removed by the v2 builder (build-gate enforced).
Contents
- Species Profile
- Life-Stage Care
- Is this pet right for you?
- Daily & Weekly Care Checklist
- Nutrition
- Husbandry
- Behavior & Training
- Enrichment & Exercise
- When to call a vet NOW
- Health & Disease
- Toxicology & Hazards
- Grooming
- Breeding & Neutering
- Regulations & Legality
- Appendix A — Commercial Food & Regulatory Notes
- Appendix B — Research Evidence
Species Profile
The profile below records this species' taxonomy, natural origin and lifespan as documented in the cited reference.
Mongolian gerbil (Meriones unguiculatus) — species profile (taxonomy, geographic range, habitat, physical description, behavior, wild diet, reproduction, lifespan)
Mongolian gerbils, or Mongolian jirds, occur naturally in the highlands of Inner Mongolia. [1]
They are also found in adjacent parts of southern Siberia and northern China, including Sinkiang and Manchuria provinces. [1]
Currently Meriones unguiculatus is a popular housepet and is widely used in research. [1]
It can be found worldwide in a variety of locales and environments (Agren et al. 1989). [1]
Mongolian gerbils live in the highlands in Inner Mongolia. [1]
Climate in these regions is extreme, temperatures can vary from -40 degrees Celsius in the winter to 50 degrees Celsius in the summer. [1]
These areas are characterized by low annual precipitation (less than 230 mm a year) and a long winter (October to April). [1]
Gerbils, or jirds, live in clay or sandy deserts, grasslands, scrub, arid steppes, and mountain valleys. [1]
Mongolian jird body length averages 120 mm long, tail length may range up to 120 mm. [1]
The fur is thin, with grey roots, a yellow shaft, and a black tip. [1]
Ventral fur is white and their unfurred claws reveal their pink/white skin. [1]
Males are slightly larger than females, with males averaging 60 grams and females averaging 50-55 grams (van Veen 1999). [1]
Mongolian gerbils have some interesting behaviors. [1]
Each family group of gerbils seems to be led by an alpha male that is larger than the rest. [1]
Family and territory size (anywhere from 325 to 1550 square meters) seems to be dependent on alpha male size. [1]
There are 2-3 times more females than males in any family but family size rarely exceeds 20 animals. [1]
Saltwort ( Salsola collina ), bristle grass ( Setaria viridis ), and lyme grass ( Leymus chinensis ) are also eaten. [1]
Gerbils conserve both water and fat extremely well. [1]
They conserve water by producing a highly concentrated urine and dry feces. [1]
Captive mongolian gerbils eat a wide variety of foods, including grains, grasses, and some fruits and vegetables. [1]
Wild mongolian gerbils breed between February and October, producing up to three litters. [1]
The estrus cycle lasts 4-6 days and a post-partum estrus can occur. [1]
Litter size varies between 1 and 12, but averages 4 to 7. [1]
Mongolian gerbil populations are stable. [1]
Their adaptations to their harsh natural enviroments makes them suited for living in many parts of the world. [1]
Life-Stage Care
Young, adult and senior care for this species, drawn from first-hand care pages and veterinary references.
Gerbil — life stage (owner-practical care, Merck Veterinary Manual pet-owner)
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Adapted to dry desert conditions, gerbils drink little — about 4 mL (under 1 teaspoon) per day for an adult. [2]
While the gerbil adjusts, let it climb over your palm before lifting it out. [2]
The best way to lift a gerbil is to scoop it up under the belly with both hands. [2]
Average lifespan in captivity: 2.0 years [1]
Is this pet right for you?
- Highly social, keep in pairs: gerbils are highly social and live in family groups in the wild, and are best kept in pairs (ideally same-sex siblings). [2]
- Territorial at first: when adding a new gerbil to an established cage, supervise the introduction because they may be territorial initially and need time to adjust. [2]
- Solid-floor cage with deep bedding: gerbils need a cage with a solid (non-mesh) floor because they often stand on their hind legs, and bedding about one-third deep lets them dig and hoard food. [2]
- Not for very young children: because of their small size, gerbils do not tolerate rough handling and are not recommended for very young children. [2]
- Daily attention: it is wise to observe a gerbil's condition and behaviour daily; they are sensitive to stress, so do not startle them or pick them up while sleeping. [2]
Daily & Weekly Care Checklist
Every day:
- Feed a gerbil-specific diet: pet gerbils need a good-quality balanced diet made specifically for gerbils (compound pellets or a seed mixture), and you should follow the manufacturer's guidance for how much to feed. [3]
- Pelleted chow amount: a pelleted rodent diet with 18–20% protein works well; about 5–8 g/day of pelleted chow is recommended. [4]
- Keep treats small: other foods besides pellets should be no more than 20% of the total diet, with about ½ teaspoon of nuts/seeds per day. [5]
- Fruit and veg supplement: supplement the diet with fruit (pear, melon, apple, orange) and vegetables (cucumber, carrot, pumpkin, fennel); pumpkin seeds are a healthy treat. [3]
- Avoid poisonous foods: grapes and rhubarb are poisonous to rodents and must not be fed, and excessive fatty seeds such as sunflower seeds can cause obesity and should be limited. [3]
- Water always: fresh, clean drinking water must be constantly available in a bottle with a metal sipper tube; check it daily for leaks or blockages (adults drink only about 4 mL/day). [3] [2]
- Clean the bottle: wash the water dispenser thoroughly every time it is refilled. [2]
- Encourage foraging: scatter food on the bedding surface to encourage natural foraging and prevent squabbling. [3]
- Daily health watch: observe your gerbil's condition and behaviour daily and do health checks so you quickly notice signs of illness or pain. [2] [6]
- Sand bath: gerbils may benefit from regular sand or dust baths; rolling in sand helps these desert animals keep their fur clean. [2]
Every week:
- Rotate the cage: periodically rearranging the cage contents helps keep a gerbil stimulated. [2]
- Safe gnawing branches: provide safe branches for gnawing (willow, hazel, beech, birch, fruit-tree) and never give ivy, yew or holly, which are poisonous. [6]
- Watch humidity: keep the enclosure below about 50% relative humidity, because nasal dermatitis is more likely above that level. [7]
Nutrition
The staple is a good-quality gerbil diet (compound pellets or a seed mixture); a pelleted rodent diet with 18–20% protein fed at about 5–8 g/day supports them, while homemade diets, sunflower seeds or table scraps cause nutrient deficiencies. [3] [4]
The quotes below summarise this species' dietary requirements and nutrition-related disease risks, drawn from professional veterinary references.
Gerbil feeding — commercial gerbil diet (pellets/seed mix) + fruit/veg supplement; water bottle
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Gerbils naturally eat seeds of various grasses, bulbs, leaves and herbs. [3]
Pet gerbils need a good-quality balanced diet made specifically for gerbils (compound pellets or a seed mixture), formulated to meet their biological needs. [3]
Follow the manufacturer's guidance for how much to feed. [3]
Supplement the diet with fruit (such as pear, melon, apple, oranges) and vegetables (such as cucumber, carrot, pumpkin and fennel); pumpkin seeds are a healthy treat. [3]
Fresh, clean drinking water must be constantly available in a bottle with a metal sipper tube; check it daily for leaks or blockages. [3]
Gerbil nutrition — natural (wild) diet of Mongolian gerbils
All lines in this block are paraphrased derived summaries — non-Open-Access source.
In the wild, Mongolian gerbils eat green plants, roots, bulb seeds, cereals, fruit and insects. [7]
Gerbil nutrition — seed-based diet and supplemental protein
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Wild Mongolian gerbils eat green plants, roots, bulbs, seeds, cereals, fruit, and insects. [4]
Gerbils hoard food and rarely eat feces unless undernourished. [4]
They do well on pelleted rodent diets with 18–20% protein. [4]
Homemade diets, sunflower seeds, or table scraps cause nutrient deficiencies. [4]
Sunflower seeds are high-fat and low-calcium. [4]
About 5–8 g/day of pelleted chow is recommended. [4]
Diets over 4% fat raise blood cholesterol (lipemia), more pronounced in males. [4]
Gerbils pass little urine and hard, dry droppings. [4]
Nasal dermatitis: clean lesions and give topical or parenteral antimicrobials, but avoid streptomycin (fatal in gerbils). [4]
Tyzzer disease (Clostridium piliforme) is the most reported fatal infection in gerbils. [4]
Gerbil fatal enterotoxemia (Clostridioides difficile) has followed triple-antibiotic wafers used to clear Helicobacter. [4]
Pinworms respond to fenbendazole in feed (150 ppm, every other week for 9 weeks) or oral paste (12 mg/kg once). [4]
Gerbil safe greens & vegetables — seed- and herb-eating rodent; pellet base, fruit/veg supplement, rodent toxins
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Safe greens include the fruit and vegetables that supplement the base pellets — fruit such as pear, melon, apple and orange, and vegetables such as cucumber, carrot, pumpkin and fennel. [3]
Pumpkin seeds are a healthy treat; gerbils like to sit up and hold pieces of food to gnaw. [3]
Rat, mouse, hamster and gerbil nutrition — rodent chow composition and treat limits (VIN Veterinary Partner)
Rats, mice, hamsters and gerbils have similar dietary requirements. [5]
The basic diet for this group should consist of a good quality rodent chow or lab block. [5]
Rodent chows should have a minimum of 16% protein and 4 to 5% fat content. [5]
Good quality rodent chows are considered to be fairly complete diets for this group. [5]
Other foods can be fed in addition to the commercial pellets but should not constitute more than 20% of the total diet. [5]
Fruit and vegetables as described for the rabbits, guinea pigs and chinchillas can be offered at a rate of about 1 teaspoon/day. [5]
A reasonable amount of nuts and or seeds would be a total of 1 teaspoon/day for rats and about ½ teaspoon for the other species. [5]
Pelleted food should be purchased in amounts that will be used within three months to prevent spoilage. [5]
Gerbils spend much of their time foraging. [1]
Husbandry
Use a secure, easy-to-clean cage with a solid (non-mesh) floor and about one-third-deep bedding so gerbils can dig and hoard; hiding and burying food in the bedding is normal behaviour. [2]
Housing, environment and daily-care essentials for this species.
Gerbil diet — wild diet of vegetation/seeds/insects; hoarding; not coprophagic
All lines in this block are paraphrased derived summaries — non-Open-Access source.
In the wild, Mongolian gerbils eat green vegetation, roots, bulb seeds, cereals, fruits, and insects. [7]
Gerbils hoard food and are not normally coprophagic (do not eat their own faeces), unless their diet lacks adequate nutrients. [7]
Fed standard rat/mouse diets, gerbils commonly develop gradual, silent periodontal disease after about 6 months of age. [7]
On those same diets, roughly 10% of gerbils become obese, and some show reduced glucose tolerance, increased blood insulin, and diabetic changes in the pancreas and other organs. [7]
[Paraphrased derived summary — non-Open-Access source.] Scatter food on the bedding surface to encourage natural foraging and prevent squabbling. [3]
[Paraphrased derived summary — non-Open-Access source.] Gerbils need a cage with a solid (non-mesh) floor because they often stand on their hind legs. [2]
[Paraphrased derived summary — non-Open-Access source.] Bedding about one-third deep lets gerbils dig and hoard food and helps absorb urine. [2]
[Paraphrased derived summary — non-Open-Access source.] Hiding and burying food in the bedding is normal gerbil behaviour. [2]
[Paraphrased derived summary — non-Open-Access source.] Periodically rearranging the cage contents helps keep a gerbil stimulated. [2]
[Paraphrased derived summary — non-Open-Access source.] Do not take a new gerbil out of its cage immediately after bringing it home. [2]
[Paraphrased derived summary — non-Open-Access source.] Whatever cage is used must be secure against escape and easy to clean. [2]
[Paraphrased derived summary — non-Open-Access source.] Begin by sitting quietly beside the cage, talking softly or offering a treat from an open palm. [2]
[Paraphrased derived summary — non-Open-Access source.] Hold the gerbil over its cage or your lap so it cannot escape if it wriggles free. [2]
[Paraphrased derived summary — non-Open-Access source.] Let the gerbil climb over your palm before lifting it out of its cage. [2]
[Paraphrased derived summary — non-Open-Access source.] Bedding made from recycled paper products is safe and easy to clean. [2]
[Paraphrased derived summary — non-Open-Access source.] Avoid cleaning the cage during the first few days after pups are born. [2]
[Paraphrased derived summary — non-Open-Access source.] Gerbils are prone to developing nasal dermatitis when the relative humidity rises above 50%; keeping the enclosure at lower humidity is advisable. [7]
Behavior & Training
Gerbils are highly social and generally friendly and easy to socialise, but may be territorial when first introduced; avoid startling them or lifting them while sleeping. [2]
Socialisation, bonding, play and preventing boredom / behaviour problems.
Gerbil — behavior (owner-practical care, Merck Veterinary Manual pet-owner)
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Gerbils are highly social and live in family groups in the wild. [2]
When adding a new gerbil to an established cage, supervise the introduction; they may be territorial at first and need time to adjust. [2]
Gerbils are generally friendly and easy to socialise. [2]
To avoid stress, do not startle a gerbil or pick it up while it is sleeping. [2]
It is wise to observe a gerbil's condition and behaviour daily. [2]
Because of their small size, gerbils do not tolerate rough handling and are not recommended for very young children. [2]
[Paraphrased derived summary — non-Open-Access source.] When adding a new gerbil, supervise; they may be territorial initially and need time to adjust. [2]
Enrichment & Exercise
Toys, foraging, hiding and exercise to prevent boredom.
Gerbil — enrichment (owner-practical care, Merck Veterinary Manual pet-owner)
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Gerbils are active and enjoy climbing and burrowing. [2]
Like chinchillas, gerbils may benefit from regular sand or dust baths; rolling in sand helps these desert animals keep their fur clean. [2]
In the wild, gerbils build elaborate burrow systems. [2]
Many owners supply plastic tubing and structures that allow climbing and burrowing. [2]
Sturdy rocks, wooden planks and ladders also provide climbing opportunities. [2]
Because gerbils chew everything, avoid toys with pieces that could harm them if swallowed. [2]
Small cardboard boxes and toilet-tube rolls make cheap, readily available toys even if quickly shredded. [2]
Some owners give gerbils an exercise wheel. [2]
Traditional slatted hamster wheels can trap a gerbil's feet or delicate tail. [2]
Choose a solid-surfaced wheel, or tape over the outside of a slatted one to make a solid surface. [2]
When to call a vet NOW
- Daily checks catch illness: do daily health checks so you quickly notice signs of illness or pain and can get the gerbil to a vet promptly. [6]
- Redness around the nostrils: gerbils with nasal dermatitis first show redness (erythema) around the external nostrils — book a vet visit, and keep humidity below 50% to reduce risk. [7]
- Seizures in a young gerbil: some gerbils inherit a predisposition to reflex epilepsy and show repeated clonic-tonic seizures beginning at about 2 months of age — see a vet. [7]
- Vet-only medicines: only ever give medicines specifically recommended for gerbils by a vet; a penicillin–dihydrostreptomycin injection can be fatal (50 mg causes almost 100% mortality in adults). [6] [8]
- If it ate something poisonous: grapes and rhubarb are poisonous to gerbils, and ivy, yew or holly branches are poisonous — keep them out of reach and call a vet immediately if any was ingested. [3] [6]
Health & Disease
Key health risks include Tyzzer disease (the most frequently reported fatal infection), nasal dermatitis above 50% humidity, inherited reflex epilepsy from about 2 months, and 25–40% neoplasia in gerbils over 2–3 years. [7]
Common conditions and their clinical signs, drawn from professional veterinary references. If you notice worrying signs, contact a species-experienced veterinarian promptly.
Gerbil Tyzzer disease: fatal enterohepatic infection caused by Clostridium piliforme
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Tyzzer disease is a naturally occurring infection of the intestine and liver caused by the obligate intracellular bacterium Clostridium piliforme, and is the most frequently reported fatal infectious disease of gerbils. [7]
Gerbil emergency / urgent signs — daily checks, vet-only medicines, poisonous branches
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Do daily health checks so you quickly notice signs of illness or pain and can get the gerbil to a vet promptly. [6]
Only ever give medicines specifically recommended for gerbils by a vet. [6]
Gerbil nasal dermatitis — humidity >50% predisposes; low humidity advised
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Gerbils with nasal dermatitis first show redness (erythema) around the external nostrils. [7]
Gerbil neoplasia: high spontaneous tumor incidence (25–40%) in gerbils over 2–3 years old
All lines in this block are paraphrased derived summaries — non-Open-Access source.
In laboratory colonies of Mongolian gerbils, spontaneous tumours are common: 25–40% of animals older than 2–3 years develop neoplasia (Merck cites references 15 and 16). [7]
Gerbil seizure predisposition: reflex epileptiform seizures in genetically susceptible animals
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Some gerbils inherit a predisposition to reflex epilepsy and show repeated clonic-tonic (stereotypical epileptiform) seizures beginning at about 2 months of age. [7]
Frequent gentle handling during the first 3 weeks of life can suppress seizures in genetically predisposed gerbils. [7]
Toxicology & Hazards
Substances and environmental hazards to avoid.
Fatal penicillin-dihydrostreptomycin toxicosis in Mongolian gerbils
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Mongolian gerbils can suffer fatal acute toxicosis after an injection of a penicillin–dihydrostreptomycin–procaine combination. [8]
The dihydrostreptomycin component is the cause: 50 mg produces almost 100% mortality in adult gerbils. [8]
Gerbil toxic / harmful foods — grapes and rhubarb poisonous to rodents; limit fatty seeds
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Grapes and rhubarb are poisonous to rodents and must not be fed to gerbils. [3]
Excessive amounts of fatty seeds such as sunflower seeds can cause obesity and should be limited. [3]
[Paraphrased derived summary — non-Open-Access source.] Do not feed grapes or rhubarb, which are poisonous to rodents; avoid excessive sunflower seeds and other fatty seeds, as these can cause obesity. [3]
[Paraphrased derived summary — non-Open-Access source.] Safe branches for gnawing include willow, hazel, beech, birch and fruit-tree branches; do not give ivy, yew or holly, which are poisonous. [6]
Grooming
Brushing / bathing, nails, coat / skin and dental care.
Gerbil — grooming (owner-practical care, Merck Veterinary Manual pet-owner)
All lines in this block are paraphrased derived summaries — non-Open-Access source.
A clean environment and a high-quality commercial diet formulated for gerbils help keep the pet healthy. [2]
Fresh clean water should be provided daily. [2]
Water dispensers should be washed thoroughly each time they are refilled. [2]
A gerbil's incisor teeth grow continuously, so constant chewing and gnawing are needed to wear them down. [2]
Lifting a young gerbil's tail shows a small bare patch; on males this patch sits farther from the tail than on females, a useful sexing clue. [2]
Newborn pups can be lost or crushed under normal toys and exercise equipment. [2]
Choose a gerbil with smooth glossy fur, clear eyes and no obvious signs of trauma such as limping or hair loss on the body or tail. [2]
Breeding & Neutering
Neutering / spaying, reproduction and preventing unwanted litters.
Gerbil — breeding (owner-practical care, Merck Veterinary Manual pet-owner)
All lines in this block are paraphrased derived summaries — non-Open-Access source.
Gerbils are best kept in pairs, ideally same-sex siblings. [2]
Pregnancy lasts about 24 days and litters contain 1–8 pups. [2]
Ovarian cysts, common in older females, are a major cause of infertility and small litters. [2]
Gerbils care for their young instinctively, so owners need not intervene. [2]
Gestation lasts between 19 and 30 days. [1]
Regulations & Legality
Legality crosswalk lines for this species, where available. Jurisdiction-specific pet law is frequently a gap — see the roadmap.
⚠️ Incomplete — jurisdiction-specific pet-law data is still being collected. The lines below are unverified statute excerpts, not actionable legal guidance; treat them as honest gaps and consult the relevant authority.
Gerbil — species legality crosswalk (US/CA/FL named lists + EU/JP/CITES framework)
The most common examples are ferrets, hedgehogs, sugar gliders, gerbils, monkeys, and monk parakeets.
Appendix A — Commercial Food & Regulatory Notes
How pet-food regulatory standards treat this species (reference material, demoted from the main flow).
Exotic / specialty pet food — AAFCO recognizes no nutrient profiles for exotics; standards defer to NRC species reports
As an AAFCO-recognized nutrient profile or nutritional authority: [9]
For dogs, the AAFCO Dog Food Nutrient Profiles; [9]
For cats, the AAFCO Cat Food Nutrient Profiles; [9]
For specialty pets, the nutrient recommendations approved by the Committee on Animal Nutrition of the National Research Council of the National Academy of Sciences [9]
Appendix B — Research Evidence
Peer-reviewed papers indexed for this species (reference material). Entries whose abstract did not mention the species by name, or were flagged off-topic at source, were omitted as likely mis-clustered.
Evidence cluster — Gerbil (Meriones unguiculatus) husbandry, health & nutrition (peer-reviewed, Europe PMC)
PMID 41754451 (2026, Pathogens (Basel, Switzerland)) — [Paraphrased derived summary — non-Open-Access source.] Using the nonpermissive Mongolian gerbil, researchers compared intraperitoneal infection with Brugia malayi (permissive control) versus Dirofilaria immitis third-stage larvae. D. immitis recovery was only 0.4% at day 1 versus 37.4% for B. malayi, rose to 23.6% by day 3 (suggesting transient tissue residence during the third molt), then fell; by day 36 B. malayi reached the immature adult stage (15.2%) while no viable D. immitis were recovered, indicating a robust macrophage-dominated response after the molt blocks establishment and explaining filarial host specificity. [10]
References
[1] https://animaldiversity.org/accounts/Meriones_unguiculatus/
grade B: T3 professional reference, verbatim (computed per docs/topic_grading_guide.md §4)
[2] https://www.merckvetmanual.com/all-other-pets
grade B: T3 professional reference, paraphrase (computed per docs/topic_grading_guide.md §4)
[3] https://www.rspca.org.uk/adviceandwelfare/pets/rodents/gerbils/diet
grade C: T4 expert organisation, paraphrase (computed per docs/topic_grading_guide.md §4)
[4] https://www.merckvetmanual.com/exotic-and-laboratory-animals
grade B: T3 professional reference, paraphrase (computed per docs/topic_grading_guide.md §4)
[5] https://veterinarypartner.vin.com/default.aspx?pid=19239&catId=254109&id=4952897
grade B: T3 professional reference, verbatim (computed per docs/topic_grading_guide.md §4)
[6] https://www.rspca.org.uk/adviceandwelfare/pets/rodents/gerbils/health
grade C: T4 expert organisation, paraphrase (computed per docs/topic_grading_guide.md §4)
[7] https://www.merckvetmanual.com/exotic-and-laboratory-animals/rodents/gerbils
grade B: T3 professional reference, paraphrase (computed per docs/topic_grading_guide.md §4)
[8] https://www.merckvetmanual.com/
grade B: T2 peer-reviewed/T3 professional reference, paraphrase (computed per docs/topic_grading_guide.md §4)
[9] AAFCO — Dog / Cat / Specialty-Pet Food Nutrient Profiles (NRC for specialty pets) — https://www.aafco.org/
grade A: T1 government/standard, verbatim (computed per docs/topic_grading_guide.md §4)
[10] https://pubmed.ncbi.nlm.nih.gov/41754451/
grade B: T2 peer-reviewed, paraphrase (computed per docs/topic_grading_guide.md §4)
Supplement Data Roadmap
Known gaps in this manual, machine-checked against the published text on every build; an item appears only while the gap is still real.
- Regulations & Legality depth: only 1 verified legality line(s) so far — coverage is still being collected; consult your local authority before relying on this section.
- Root-domain reference(s): https://www.merckvetmanual.com/, https://www.aafco.org/ — these point to a source home page rather than the exact page; being fixed.