Small Mammals

Solitary nocturnal rodent; prioritize deep bedding and continuous floor space.

Adult size

5.12–7.09 in

Reference Lifespan

2–3 yr

Environment reference

64.4–75.2 °F

Social rodents that are good at digging; require deep substrate, not just a small cage.

Adult size

3.94–5.12 in

Reference Lifespan

3–4 yr

Environment reference

64.4–75.2 °F

Highly social and exploratory rodents; companionship and environmental enrichment are essential.

Adult size

7.87–11.02 in

Reference Lifespan

2–3 yr

Environment reference

64.4–75.2 °F

Heat-sensitive high-fiber herbivore; summer cooling and long-term dental care are important.

Adult size

8.66–14.96 in

Reference Lifespan

10–20 yr

Environment reference

60.8–69.8 °F

Diurnal, social rodents that require chewing, digging, and a low-sugar diet.

Adult size

4.72–7.87 in

Reference Lifespan

5–8 yr

Environment reference

64.4–71.6 °F

Requires companions, continuous ground, unlimited hay, and vitamin C.

Adult size

7.87–11.81 in

Reference Lifespan

4–8 yr

Environment reference

64.4–75.2 °F

Rabbits are not small-cage animals; they require large exercise areas, hay, neutering, and long-term veterinary budgets.

Adult size

9.84–15.75 in

Reference Lifespan

8–12 yr

Environment reference

59–71.6 °F

Nocturnal, capable of rolling into a spiny ball and running; observation-type small mammal; temperature, exercise, and exotic animal veterinary care are critical.

Adult size

5.91–9.84 in

Reference Lifespan

3–6 yr

Environment reference

71.6–80.6 °F

Highly social, nocturnal, and long-lived arboreal marsupials; not suitable for understanding as small-cage pets.

Adult size

4.72–5.91 in

Reference Lifespan

10–15 yr

Environment reference

68–82.4 °F

Highly active, high-exploration, and high-odor small carnivores; require daily outdoor time and escape-proof modification.

Adult size

13.78–19.69 in

Reference Lifespan

6–10 yr

Environment reference

59–75.2 °F

Highly social and active; indoor space, chew-proofing, and veterinary resources are heavily required.

Adult size

11.81–15.75 in

Reference Lifespan

8–12 yr

Environment reference

64.4–78.8 °F

Nocturnal, solitary small marsupial; scent, interaction rhythm, and medical care must be arranged in advance.

Adult size

4.72–7.09 in

Reference Lifespan

3–5 yr

Environment reference

71.6–82.4 °F

Extremely small in size and fast-breeding, requiring careful management of escape-proof mesh, group numbers, and nocturnal activity.

Adult size

1.97–3.15 in

Reference Lifespan

1–2 yr

Environment reference

68–78.8 °F

Skin and social dynamics differ from the common house mouse; escape prevention, sand bathing, and low-fat diets must be planned together.

Adult size

3.15–5.12 in

Reference Lifespan

4–7 yr

Environment reference

68–82.4 °F

Social, active, and fast-breeding; housing space, scent, and isolation cages must be prepared before acquisition.

Adult size

4.72–7.09 in

Reference Lifespan

2–4 yr

Environment reference

68–80.6 °F

Tail fat storage and nocturnal activity are key traits; deep bedding, low-sugar diets, and escape prevention are most critical.

Adult size

3.94–5.12 in

Reference Lifespan

4–7 yr

Environment reference

68–82.4 °F

Excavators, nocturnal, and prone to biting; deep bedding, chew-proof fencing, and social dynamics must be arranged first.

Adult size

4.72–7.09 in

Reference Lifespan

3–6 yr

Environment reference

68–82.4 °F

Slender body and strong climbing ability; cage gaps, escape prevention, and single-housing boundaries cannot be simplified based on common hamster experience.

Adult size

3.54–4.72 in

Reference Lifespan

2–4 yr

Environment reference

64.4–77 °F

Small body size, fast, and not necessarily handling-friendly; prioritize wheels, deep bedding, and escape-proofing.

Adult size

1.97–3.15 in

Reference Lifespan

2–4 yr

Environment reference

64.4–77 °F

Requires deep bedding, stable routine, and controlled-sugar diet; co-housing cannot be assumed safe.

Adult size

3.15–4.33 in

Reference Lifespan

2–3 yr

Environment reference

64.4–77 °F

Small body size but requires full running space; lighting, temperature, and co-housing conflicts must be considered in advance.

Adult size

3.15–4.33 in

Reference Lifespan

2–3 yr

Environment reference

64.4–77 °F

Fast breeding, strong odor, and good at squeezing into crevices; gender segregation, bedding, and escape-proofing must be implemented simultaneously.

Adult size

2.76–3.94 in

Reference Lifespan

1–3 yr

Environment reference

64.4–78.8 °F

Active, agile, and not necessarily suitable for frequent handling; requires long cages, group observation, and escape-proofing.

Adult size

3.94–5.51 in

Reference Lifespan

2–4 yr

Environment reference

64.4–78.8 °F

Nocturnal, good at climbing, and requires hidden nest boxes; escape risk and stable nighttime care must be assessed first.

Adult size

3.15–4.72 in

Reference Lifespan

3–6 yr

Environment reference

64.4–78.8 °F

Protection and sourcing are heavily restricted; nocturnal activity, hibernation, and climbing space must be permitted by local regulations before considering ownership.

Adult size

2.36–3.54 in

Reference Lifespan

3–6 yr

Environment reference

60.8–75.2 °F

Requires continuous vertical space and a night activity zone; ventilation, escape prevention, and exotic vet care are all difficult.

Adult size

7.87–11.81 in

Reference Lifespan

5–8 yr

Environment reference

64.4–77 °F

Nocturnal, social, and requires a large-volume enclosure; diet, odor, and long-term companionship cannot be underestimated.

Adult size

7.87–11.81 in

Reference Lifespan

8–12 yr

Environment reference

64.4–78.8 °F

Social, large-bodied, and water-dependent; household environments almost always face space, hygiene, and regulatory barriers.

Adult size

35.43–51.18 in

Reference Lifespan

8–12 yr

Environment reference

68–86 °F

High running distance, gnawing, and social needs; indoor housing requires pen-level space.

Adult size

25.59–31.5 in

Reference Lifespan

10–15 yr

Environment reference

59–77 °F

High activity, gnawing, and territoriality; requires durable fencing, environmental enrichment, and stable social arrangements.

Adult size

15.75–23.62 in

Reference Lifespan

10–15 yr

Environment reference

71.6–86 °F

Cooler, good at jumping, and requires rock shelves; summer cooling and high-fiber diets are the main challenges.

Adult size

11.81–17.72 in

Reference Lifespan

8–12 yr

Environment reference

53.6–75.2 °F

Nocturnal, large body size, and requires water and deep hides; standard pet cages cannot meet long-term needs.

Adult size

23.62–35.43 in

Reference Lifespan

10–15 yr

Environment reference

71.6–86 °F

Nocturnal, seasonal hibernation, and diet differ from common hedgehogs; temperature fluctuations and exotics veterinary care must be verified first.

Adult size

5.12–7.09 in

Reference Lifespan

4–8 yr

Environment reference

71.6–86 °F

Body size and spiny defense exceed those of common small hedgehogs; nocturnal activity, diet, and medical resources require attention.

Adult size

7.09–9.84 in

Reference Lifespan

4–8 yr

Environment reference

71.6–86 °F

Body size, spiny defense, and seasonal hibernation make care complex; sources and specialist veterinarians must be verified first.

Adult size

9.84–15.75 in

Reference Lifespan

4–8 yr

Environment reference

71.6–86 °F

Strong spiny defense, gnawing, and climbing abilities; require outdoor-grade enclosures and professional medical support.

Adult size

23.62–39.37 in

Reference Lifespan

10–15 yr

Environment reference

59–77 °F

Nocturnal habits, gnawing, and spiny defense result in high maintenance costs; ordinary households are not suitable as a starting exotic pet.

Adult size

13.78–23.62 in

Reference Lifespan

8–15 yr

Environment reference

68–82.4 °F

Scent glands, digging, and regulations are hard barriers; they cannot be kept as ordinary small mammals.

Adult size

15.75–27.56 in

Reference Lifespan

5–10 yr

Environment reference

64.4–78.8 °F

Scent, nocturnal activity, and defensive behavior require specialized housing and regulatory review; interaction cannot be judged solely by domestication level.

Adult size

13.78–23.62 in

Reference Lifespan

5–10 yr

Environment reference

68–86 °F

Intelligent, curious, capable of unlocking, and highly destructive; long-term care requires specialized enclosures and veterinary resources.

Adult size

15.75–27.56 in

Reference Lifespan

10–16 yr

Environment reference

64.4–82.4 °F

High social, climbing, and foraging needs make it difficult for a home environment to simultaneously ensure safety and enrichment.

Adult size

15.75–27.56 in

Reference Lifespan

10–15 yr

Environment reference

71.6–86 °F

Nocturnal, long-lived, and with bite risk; requires large vertical space, consistent companionship, and exotic veterinary care.

Adult size

15.75–23.62 in

Reference Lifespan

20–25 yr

Environment reference

71.6–86 °F

Highly social, long-lived, and requiring primate medical care; completely unsuitable as an ordinary household pet.

Adult size

7.09–9.84 in

Reference Lifespan

12–16 yr

Environment reference

71.6–86 °F

Small size does not mean easy care; social needs, arboreal space, diet, and regulatory thresholds are all very high.

Adult size

4.72–6.3 in

Reference Lifespan

12–16 yr

Environment reference

71.6–86 °F

Social, active, and requiring primate-specialist care; standard cages and single-animal interaction are insufficient.

Adult size

9.84–13.78 in

Reference Lifespan

15–25 yr

Environment reference

71.6–86 °F

Requires digging, activity, and a low-stress environment; source, diet, and specialist veterinary care must be confirmed first.

Adult size

11.81–15.75 in

Reference Lifespan

15–20 yr

Environment reference

71.6–86 °F

Nocturnal, burrowing, and requiring deep substrate; indoor space, hygiene, and regulatory restrictions are all significant.

Adult size

13.78–23.62 in

Reference Lifespan

10–15 yr

Environment reference

71.6–86 °F

Size and jumping ability dictate that it requires paddock-level space; standard residential housing cannot provide safe activity distances.

Adult size

39.37–62.99 in

Reference Lifespan

12–20 yr

Environment reference

59–86 °F

Requires large grassy areas, jump-proof fencing, and conspecific socialization; urban households struggle to meet long-term activity needs.

Adult size

27.56–39.37 in

Reference Lifespan

10–15 yr

Environment reference

53.6–78.8 °F

Timid, nocturnal, and forest-dependent; sourcing and professional veterinary care are more critical than interaction expectations.

Adult size

15.75–21.65 in

Reference Lifespan

10–15 yr

Environment reference

71.6–86 °F

Nocturnal, burrowing, with loud vocalizations and strong odor; requires specialized housing and local regulatory permits.

Adult size

9.84–15.75 in

Reference Lifespan

10–14 yr

Environment reference

68–89.6 °F

Requires running, burrowing, and nocturnal activity space; husbandry costs and regulatory thresholds far exceed those of typical small mammals.

Adult size

17.72–25.59 in

Reference Lifespan

8–12 yr

Environment reference

64.4–86 °F

Large body size, strong biting, and social enrichment needs; housing, odor management, and veterinary care must be established first.

Adult size

13.78–19.69 in

Reference Lifespan

5–8 yr

Environment reference

68–82.4 °F

Highly social, subterranean, with specialized temperature requirements; ordinary households cannot replicate group environments.

Adult size

3.15–4.72 in

Reference Lifespan

10–25 yr

Environment reference

82.4–89.6 °F

Exhibits strong social, climbing, and territorial behaviors; requires rock-wall style enclosures and specialized veterinary care; unsuitable for home keeping.

Adult size

15.75–23.62 in

Reference Lifespan

8–12 yr

Environment reference

64.4–86 °F

Nocturnal, arboreal, and capable of jumping; requires digging and foraging space; source and specialist veterinary resources must be verified first.

Adult size

11.81–15.75 in

Reference Lifespan

6–10 yr

Environment reference

60.8–78.8 °F

Nocturnal, arboreal, and capable of biting; requires tall enclosures, environmental enrichment, and specialist veterinary care; cannot be managed like common rodents.

Adult size

9.84–13.78 in

Reference Lifespan

6–10 yr

Environment reference

68–82.4 °F

Small body size but requires tall enclosures, climbing opportunities, and continuous enrichment; source and specialist veterinary care must be verified first.

Adult size

3.94–5.91 in

Reference Lifespan

4–8 yr

Environment reference

71.6–84.2 °F

Nocturnal, gliding, and arboreal; requires high enclosure length, escape risk assessment, and regulatory compliance evaluation.

Adult size

5.51–7.87 in

Reference Lifespan

5–8 yr

Environment reference

60.8–77 °F

Small body size, nocturnal, and requires arboreal nesting boxes; food, temperature, and veterinary resources cannot be managed like hamsters.

Adult size

3.94–5.51 in

Reference Lifespan

4–6 yr

Environment reference

64.4–78.8 °F