Enclosure size guide for small pets (and what matters more than “cute cages”)

Quick answer

Prioritize floorspace, ventilation, and safety over aesthetics. Many “starter cages” are too small. A bigger enclosure reduces stress behaviors and makes cleaning easier.

Floorspace beats height

Small pets don’t benefit from tall cages as much as people think. What they need most:

• Room to explore
• Multiple zones (sleep, eat, toilet)
• Enrichment space

The 5 enclosure checks before you buy

1. Enough floorspace (bigger is better)
2. Safe materials (no sharp edges, no unsafe plastics for heavy chewers)
3. Bar spacing appropriate to prevent escapes
4. Easy cleaning access (you will do this weekly)
5. Enrichment-friendly layout (hides, tunnels, chew items)

Layout that works for most small pets

• 2 hides (one near food, one in a quieter corner)
• Foraging zone (scatter-feed area or puzzle)
• Toilet zone (litter area or predictable “bathroom corner”)
• Activity zone (wheel for hamsters, tunnels, platforms for others)

Common enclosure mistakes

• Too small “starter” cages
• No hides (pet feels exposed)
• Strong-smelling bedding with dust
• Tall levels without safe ramps (falls happen)

FAQ

Can I use a fish tank as an enclosure?

Sometimes, but ventilation can be an issue. Make sure airflow is appropriate and temperatures stay stable.

Do rabbits need a cage?

Rabbits typically do better with an exercise-pen style setup or a bunny-proofed space. Think “room,” not “box.”

Is it okay to upgrade later?

It’s better to buy right once. Upgrading later often means stress twice and higher total cost.

Next step

Want a simple enclosure checklist tailored to your exact small pet?