Guinea pigs are highly social animals that are frequently kept in inadequate conditions. Understanding their behavioral and social needs is essential to providing them a good life in captivity.
Guinea pigs suffer significantly when kept alone, yet solitary housing remains common. The absence of companions causes behavioral signs of depression including inactivity, reduced vocalization, and poor appetite. Inadequate space in small commercial cages prevents natural movement and foraging behaviors. Poor diet — especially insufficient hay — causes dental malocclusion that leads to painful, life-limiting disease. Many guinea pig welfare problems stem from being perceived as low-maintenance starter pets, when they in fact have complex needs. Education about proper guinea pig care dramatically improves individual animal welfare outcomes.