These are the publishers we accept as evidence, the kind of source each one is, and the species its pages cover. Each answer lists the exact pages it relies on.
| Publisher | Kind of source | Species covered | Notes |
|---|---|---|---|
| Merck Veterinary Manual | Veterinary reference, poison service or school | Rabbits, Guinea pigs, Hamsters, Gerbils, Rats, Mice, Ferrets | Owner and professional sections on rabbits, guinea pigs, hamsters, gerbils, rats and mice; toxicology chapters name susceptible species. |
| Pet Poison Helpline | Veterinary reference, poison service or school | Rabbits, Guinea pigs, Hamsters, Gerbils, Rats, Mice, Ferrets | States it handles "any species of animal". Item pages count only when they name the species assessed. |
| Royal Veterinary College | Veterinary reference, poison service or school | Rabbits, Guinea pigs, Hamsters, Gerbils, Rats, Mice, Ferrets | Veterinary school exotics service care sheets. |
| Cornell University Hospital for Animals | Veterinary reference, poison service or school | Ferrets | Veterinary school hospital pharmacy toxin list. Only entries that name the species count; it names ferrets for some medicines. |
| PDSA | Veterinary or welfare charity, or veterinary hospital group | Rabbits, Guinea pigs, Hamsters, Gerbils, Rats, Mice, Ferrets | UK veterinary charity; species care and diet pages for all six launch species. |
| RSPCA | Veterinary or welfare charity, or veterinary hospital group | Rabbits, Guinea pigs, Hamsters, Gerbils, Rats, Mice, Ferrets | UK animal welfare charity; diet and environment pages per species. |
| Blue Cross | Veterinary or welfare charity, or veterinary hospital group | Rabbits, Guinea pigs, Hamsters, Gerbils, Rats, Mice | UK pet charity. Blocks scripted requests; read in a browser. |
| Rabbit Welfare Association & Fund | Veterinary or welfare charity, or veterinary hospital group | Rabbits | UK rabbit welfare charity. |
| House Rabbit Society | Veterinary or welfare charity, or veterinary hospital group | Rabbits | US rabbit rescue and education charity. |
| VCA Animal Hospitals | Veterinary or welfare charity, or veterinary hospital group | Rabbits, Guinea pigs, Hamsters, Gerbils, Rats, Mice | Exotic pet articles; "Feeding Rodents" covers rats, mice, hamsters and gerbils together. |
We do not use blogs, pet shops, brand sites, forums, Wikipedia or AI answers as evidence.