Guinea pigs are highly social animals that suffer severely when housed alone. Understanding their social and environmental needs prevents common welfare failures in guinea pig ownership.
Guinea pigs are among the most misunderstood small pets. Marketed in small cages and sold individually, they routinely experience isolation, vitamin C deficiency, dental disease, and inadequate space — all preventable welfare failures. Switzerland recognized the severity of solitary housing by making it illegal, reflecting evidence that isolated guinea pigs show genuine distress. Paired housing, adequate space, and correct nutrition resolve most common welfare problems.