Guinea pigs are social herd animals that suffer significantly in isolation. Their housing and social needs are often underestimated, leading to widespread welfare failures in companion care.
Guinea pig welfare failures are common because their social and space needs are frequently underestimated. Small hutches sold for guinea pigs are typically far below welfare minimums. Solitary housing causes loneliness and associated behavioral depression. The legal requirement for companionship in Switzerland reflects a clear scientific understanding that isolation is a welfare harm for this highly social species.