Small Pet Habitat Size Guide & Calculator
Look up minimum enclosure size, temperature, and humidity for your small pet.
| Species | Type | Min habitat | Temp | Humidity | Tip |
|---|---|---|---|---|---|
| Axolotl | amphibian | 20-gallon long tank for one adult | 60-68°F (16-20°C) | — | Keep water cool, clean, and low-flow; avoid gravel small enough to swallow. |
| Ball python | reptile | 4 x 2 x 2 ft enclosure for adult | 76-82°F (24-28°C), warm hide 88-92°F (31-33°C) | 60-80% | Maintain stable humidity and provide snug, secure hides on both sides. |
| Bearded dragon | reptile | 4 x 2 x 2 ft enclosure | 75-85°F (24-29°C), basking 100-110°F (38-43°C) | 30-40% | Requires high-output UVB lighting, proper basking heat, and a varied diet. |
| Betta fish | fish | 5-gallon filtered, heated tank | 78-82°F (26-28°C) | — | Use a gentle filter flow and fully cycle the aquarium. |
| Budgie | bird | 30 x 18 x 18 in cage for one or two | 65-80°F (18-27°C) | — | Prioritize cage width for flight, daily out-of-cage time, and social interaction. |
| Canary | bird | 30 x 18 x 18 in cage | 60-75°F (16-24°C) | — | A long flight cage is preferable; avoid drafts and excessive handling. |
| Cockatiel | bird | 36 x 24 x 24 in cage | 65-80°F (18-27°C) | — | Provide daily supervised exercise, varied perches, and companionship or frequent interaction. |
| Corn snake | reptile | 40-gallon breeder or 4 x 2 x 2 ft enclosure for adult | 75-85°F (24-29°C), warm side 82-88°F (28-31°C) | 40-60% | Use secure, escape-proof housing with a temperature gradient and hides. |
| Gerbil | rodent | 20-gallon long tank or 600 sq in floor space for a pair | 65-75°F (18-24°C) | — | Keep compatible same-sex pairs or groups with very deep bedding for tunneling. |
| Goldfish | fish | 20-gallon tank for one fancy goldfish; add 10 gallons per additional fish | 65-75°F (18-24°C) | — | Provide strong filtration and frequent water changes; common/comet goldfish need much larger ponds or tanks. |
| Guinea pig | rodent | 7.5 sq ft for two guinea pigs; 10.5 sq ft preferred | 65-75°F (18-24°C) | — | Keep at least two compatible guinea pigs and provide unlimited grass hay. |
| Guppy | fish | 10-gallon filtered tank | 72-82°F (22-28°C) | — | Keep in groups and expect rapid breeding if males and females are together. |
| Hamster (Syrian) | rodent | 800 sq in (about 5.5 sq ft) unbroken floor space | 65-75°F (18-24°C) | — | Keep solitary and provide deep bedding, ideally 10 inches or more, for burrowing. |
| Hermit crab | other | 20-gallon tank for two small-to-medium crabs | 75-85°F (24-29°C) | 70-80% | Keep in groups, provide deep moist substrate, spare shells, and fresh and saltwater pools. |
| Leopard gecko | reptile | 20-gallon long enclosure | 75-90°F (24-32°C), warm hide 88-92°F (31-33°C) | 30-40%; humid hide available | Use a thermostat-controlled heat source and provide multiple hides. |
| Lovebird | bird | 32 x 20 x 20 in cage for one; larger for a pair | 65-80°F (18-27°C) | — | Offer daily enrichment and interaction; pairs may bond more strongly to each other than people. |
| Mouse | rodent | 20-gallon long tank or 360 sq in floor space for a small group | 65-75°F (18-24°C) | — | Female mice are social; males usually require solitary housing unless reliably compatible. |
| Neon tetra | fish | 10-gallon planted, filtered tank | 70-78°F (21-26°C) | — | Keep a school of at least six in a fully cycled, stable aquarium. |
| Rabbit | other | At least 8 sq ft permanent enclosure plus 24 sq ft exercise area | 50-70°F (10-21°C) | — | Rabbits need daily exercise, companionship, hay-based diet, and rabbit-proofed space. |
| Rat | rodent | 2.5 cubic ft per rat, with at least 4 cubic ft for a pair | 65-75°F (18-24°C) | — | Keep in same-sex pairs or groups with climbing space, enrichment, and daily social time. |
| Red-eared slider | reptile | 75-gallon aquarium for one adult | Water 75-80°F (24-27°C); basking 90-95°F (32-35°C) | — | Needs powerful filtration, UVB lighting, and a fully dry basking platform. |
| Tree frog | amphibian | 18 x 18 x 24 in vertical terrarium for a small group | 72-80°F (22-27°C) | 50-80%, species-dependent | Species requirements vary; provide vertical climbing space, dechlorinated water, and appropriate ventilation. |
No match.
Sizes are minimum guidelines only — bigger is always better; check local animal welfare rules too.