Guinea pigs are social, active animals with complex welfare needs that are frequently misunderstood by owners.
Guinea pigs are highly social prey animals that suffer significantly when kept alone or in inadequate housing. Solitary guinea pigs show signs of depression and stereotypic behaviour. Small cages prevent normal locomotion, foraging, and exploration. Inadequate diet leads to dental disease and scurvy, both causing chronic pain. Guinea pigs are skilled at hiding illness, making regular veterinary assessment important. Their welfare needs are incompatible with impulse purchase as a low-maintenance child's pet.