Guinea pigs are popular pets, but welfare problems are widespread due to single housing, inadequate space, and misunderstanding of their complex social and behavioral needs.
Guinea pig welfare deficits are often invisible to owners: an animal that sits quietly in a small cage may appear content but is in fact chronically understimulated and stressed. Welfare science is clear that guinea pigs require companion animals of the same species, substantial space with enrichment, and dietary provision of fresh hay and vitamin C. The gap between common pet shop advice and welfare best practice is significant. Improving outcomes requires honest information at point of sale and accessible veterinary care for small animals.