Guinea pigs are popular companion animals whose welfare needs are frequently misunderstood, leading to preventable suffering in millions of households.
Despite their gentle temperament and widespread popularity, guinea pigs are among the most commonly mistreated small pets. Solitary housing causes chronic stress and behavioral depression — guinea pigs are prey animals that evolved in social groups and use vocalizations for constant communication. Most commercially sold cages are too small, leading to obesity and muscle atrophy. Hay must constitute the bulk of their diet for dental health, as their continuously growing teeth require constant wear. Veterinary care for guinea pigs is often neglected because owners underestimate the cost and commitment involved. Rescue organizations report high surrender rates due to inadequate pre-adoption education.