Companion Animals

Guinea Pig Housing: Space, Substrate, and Environmental Needs

Overview of guinea pig housing welfare requirements including space, substrate, and enrichment.

Key Facts

Guinea pigs require a minimum 2m x 1m floor area for a pair according to updated guidance
Timothy hay should constitute 80% of diet and primary substrate for foraging
Hides and tunnels provide security for a prey species with high flight response
Guinea pigs cannot synthesise Vitamin C and require dietary supplementation
Outdoor guinea pigs require protection from both cold and extreme heat

Welfare Considerations

Guinea pig housing welfare requires sufficient space for exercise, appropriate substrate for foraging and comfort, and enrichment that meets their status as a prey species with high security needs. Traditional cages are frequently too small and inadequately enriched. Hay as primary substrate combines dietary and environmental welfare benefits. Owner education about space requirements, Vitamin C provision, and thermal management is an important welfare priority.

What You Can Do

Provide guinea pigs with appropriately large enclosures with deep hay substrate
Ensure daily fresh Vitamin C through peppers, kale, and other appropriate vegetables
Provide multiple hides and tunnels for security-seeking behaviour