Updated
Small mammal question
No. Different small mammal species should not be housed together. Diets, communication, disease risks, size, social rules, and stress signals do not match across species.
Include children, other pets, budget, and travel before adoption.
Start with the social rule for this species before thinking about a bigger cage, a friendly introduction, or a second animal.
Before any pairing, ask a rescue or veterinarian about sex, age, pair history, backup housing, resource guarding, repeated pursuit, wounds, blocked food, and hiding.
A hamster's sleep, a guinea pig pair's hay routine, a rat group's interaction, a chinchilla's cool room, and a ferret's proofed play all change family fit.
Children, other pets, sleep schedules, travel, lease rules, and budget can change which species fits.
Plan the housing around the species' social rule before adding a cage mate, separating a pair, or trusting a calm-looking introduction.
The household plan should name the adult in charge before travel, children, or other pets complicate care.
Chasing, boxing, guarding food or water, wounds, sudden hiding, blocked resting spots, or one animal looking thinner means the social setup is not working.
Before changing housing, confirm sex, age, pair history, backup housing, food access, and what you will do if chasing or wounds start.
No. The page gives the practical rule, then the species profile should decide the final housing, food, handling, and vet plan.
Ask an exotic-pet veterinarian promptly for appetite loss, fewer droppings, labored breathing, collapse, severe lethargy, wounds, heat stress, or sudden weight change.
