Guinea pigs are highly social animals with complex behavioral needs often unmet in standard pet care. Proper housing, diet, and companionship dramatically improve their welfare.
Guinea pig welfare in companion settings is frequently compromised by inadequate space, incorrect diet, and failure to provide social companionship. The standard commercial guinea pig hutch is dramatically undersized for animals that naturally roam several square metres daily in social groups. Single guinea pigs show behavioral indicators of chronic loneliness including increased inactivity and reduced play, vocalization, and social grooming. Correct diet is critically important: guinea pigs cannot synthesize vitamin C and must receive it through daily fresh vegetables and fortified hay or pellets — deficiency causes painful scurvy within weeks. Hay must be available at all times and form the dietary majority. Dental problems from insufficient fiber are the most common serious health issue alongside vitamin C deficiency. With appropriate social housing, space, and diet, guinea pigs are rewarding companions with rich behavioral repertoires and 4-8 year lifespans.