Guinea pigs are popular children's pets whose welfare needs including social companionship, space, and dietary complexity are frequently underestimated.
Guinea pig welfare failures are extremely common because the animals are perceived as low-maintenance starter pets. Solitary housing causes chronic loneliness — guinea pigs vocalize for contact with companions and show behavioral changes comparable to social isolation studies in other species. The small cages typically sold with guinea pigs in pet shops meet no recognized welfare standard for the species. Finding a well-rabbit-savvy veterinarian before illness occurs is essential.