Small mammals
Squirrels
Chipmunks, ground squirrels (including prairie dogs), etc.
Most important: During the fall "tiger period," do not handle bare-handed and minimize contact
Basics
- Lifespan
- Chipmunk 6–10 years; prairie dog 8–10 years
- Weight
- Chipmunk 80–130 g; prairie dog 1–1.5 kg
- Temperament
- Quick and wary. Some individuals turn aggressive in fall
- Care difficulty
- Moderate to high (escapes, bites, fall temperament change)
- Legal status
- Prairie dog imports are banned under the Infectious Diseases Control Act. Follow the Act on Welfare and Management of Animals
- Key point
- During the fall "tiger period," do not handle bare-handed and minimize contact
Ecology & traits
- Body
- Chipmunks store food in cheek pouches; prairie dogs have a stocky body and short tail. Both have ever-growing incisors
- Origin & range
- Chipmunks: northern Asia; prairie dogs: North American plains
- Wild habitat
- Chipmunks: underground burrows in forests; prairie dogs: burrows in grassland
- Activity & sleep
- Diurnal. Chipmunks hibernate in the wild and become very active hoarding food in fall
- Social behavior & people
- Chipmunks are solitary and territorial; prairie dogs live in family groups
Characteristic behaviors
- Hoarding instinct peaks in fall and temperament becomes aggressive
- Stuffs food into cheek pouches, carries it to the nest and hides it
- Prairie dogs call to warn group members of danger
Common illnesses: warning signs & prevention
Malocclusion
SignsDrooling, refusing hard food, overgrown incisors keeping the mouth from closing, weight loss
PreventionProvide chew wood and seeds in the shell to wear down teeth. Check incisor length once a month
Heatstroke
SignsLying limp, rapid breathing, drooling, hot body, seizures
PreventionKeep room temperature at or below 28°C. Avoid direct sun; set up a cooling plate in summer
Hypothermia / torpor (pseudo-hibernation)
SignsIn winter: cold body, curled up and motionless, shallow breathing, sluggish response
PreventionKeep room temperature at or above 20°C in winter. Install a pet heater in the cage
Metabolic bone disease
SignsWobbly hind legs, fractures easily, abnormal gait, loss of appetite
PreventionAvoid a sunflower-seed-heavy diet; make species pellets the staple. Provide sunlight or calcium supplementation
Enteritis / diarrhea
SignsSoft or watery stool, soiled rear, reduced appetite, weight loss, dehydration
PreventionKeep fresh vegetables and fruit to small amounts. Keep bedding clean and avoid sudden diet changes
Dermatitis / hair loss
SignsScratching, dandruff, patchy hair loss, red skin, scabs
PreventionFully change bedding at least once a week. Avoid high humidity; have the vet test for mites
Warning-sign checklist
Check once a day. If even one applies, contact an animal hospital early.
First aid for illness
Cold and motionless in winter
Wrap in your hands or a towel and warm slowly over 30 minutes or more. Never warm rapidly. If still not moving, see the vet immediately
Limp in summer
Move to a cool room and wrap the body in a damp towel. Do not apply ice. Even if it recovers, see the vet the same day
Ongoing diarrhea
Stop fresh vegetables and fruit; give pellets and water only. Photograph the stool; if it continues the next day or there is blood, see the vet that day
Cheek pouch will not empty
Do not force it out. It may be a foreign object or pus, so switch to soft food and see the vet the same day
Common injuries: prevention & first aid
Fracture / dislocation
PreventionUse a floor that keeps feet from slipping into wire-mesh gaps. Prevent falls from high places
First aidDo not handle; place in a small box, dark and quiet. No splint needed. See the vet the same day
Tail skin degloving
PreventionNever grab the tail. When catching, wrap the whole body in a towel
First aidDo not replace the stripped skin; press the bleeding area with clean gauze and see the vet the same day. Dead tissue will need amputation
Broken nail / bleeding
PreventionRemove frayed threads from fabric hammocks. Trim nails regularly
First aidPress with gauze for several minutes to stop bleeding. If it does not stop or the foot is not used, see the vet the same day
Bite wounds (cage mates)
PreventionAdult chipmunks should be housed alone. Always separate during breeding season and fall
First aidWash the wound; see the vet if pus or swelling appears. For deep wounds, see the vet the same day and ask about antibiotics
Zoonoses (diseases that can spread to people)
Salmonellosis
RouteOral infection from hands that touched feces or urine
PreventionAlways wash hands after care. Do not eat right after cleaning the cage
Dermatophytosis (ringworm)
RouteContact (bald patches, fur, bedding)
PreventionGet a test when you see hair loss or dandruff. Wear gloves when cleaning
Leptospirosis
RouteContact with water or bedding contaminated by urine
PreventionReplace urine-soaked bedding immediately. Do not handle with cuts on your hands
Tularemia / plague
RouteFleas and bites from wild ground squirrels (the reason for the import ban)
PreventionDo not touch wild individuals. Do not buy smuggled animals
Husbandry: food, water, toys, nest, bedding
Food
- Chipmunk / prairie dog pellets as the staple, 1–2 times a day
- Side foods: hay (the staple for prairie dogs) and small amounts of vegetables
- Seeds and nuts only as treats, a few pieces a day
Water
- Water bottle, changed daily. Check daily that the bottle is not clogged
- For animals that cannot use a bottle, also provide a heavy ceramic dish
Never feed
- Chocolate, onions and alliums, avocado, raw beans
- Human snacks, seasoned nuts, bread
- Too many almonds; a sunflower-seed-heavy diet
Toys & play
- Items that work the teeth, such as chew wood and walnuts in the shell
- Branches and thick rope for climbing up and down
- Exercise wheel for chipmunks only: solid surface, 20 cm or more in diameter
Nest, bed & hideout
- Wooden nest box mounted high. Entrance sized to the body
- For prairie dogs, a dark tunnel or box in place of a burrow
Bedding & litter
- Thick layer of hardwood chips or paper bedding
- Avoid softwood (cedar, pine) chips
- Do not use cotton or synthetic nesting material; it tangles around toes
Housing: cage, exercise, temperature & humidity
Cage / housing material
Tall wire cage. Mesh 1.5 cm or smaller to prevent escape
Size & space
Chipmunks: 80 cm or more in height. Prairie dogs: 80 cm or more in width
Layout
- Platforms at varied heights with the nest box near the top
- Floor as a tray with bedding, not wire mesh
- Keep the food dish and water bottle away from the nest box
Placement notes
- Out of direct sun and away from air-conditioner drafts
- Out of sight of dogs and cats, quiet, and not where people walk past
Exercise, free-roam & walks
- Before free-roam time, close windows and doors and block gaps
- 30–60 minutes a day. Never look away; do not let it get behind furniture
- Let prairie dogs run on the floor; do not let them climb high
Temperature & humidity
Temperature20–26°C. Torpor below 18°C; heatstroke above 28°C
Humidity40–60%. High humidity causes skin disease; dry air harms the airways
Summer & winter
- Summer: air conditioning plus a marble or aluminum cooling plate
- Winter: heater and insulation in the nest box. Watch for sudden cold snaps
Grooming & protection from predators
Nail trimming
Once a month. Wrap in a towel and clip only the tips. If difficult, have the vet do it
Brushing, skin & coat care
Lightly with a soft brush during shedding season. No sand bath needed, but give sunlight
Other care
Check incisor length and color once a month. Orange is normal; white is abnormal
Protection from predators
- Never keep in the same room as dogs, cats, or ferrets
- Do not take out onto the balcony; crows and snakes will target it
- In summer, guard against mosquitoes and mites. Cover the cage with insect netting
Care precautions (accident prevention)
Foreign-body ingestion
Stuffs cotton, thread, and plastic into cheek pouches. Use paper nesting material only and clear away small items during free-roam time
Being stepped on
Runs fast around your feet, so shuffle your feet during free-roam time. Check it has not crawled under the sofa or a floor cushion
Getting pinched
Many accidents involve being caught in doors. Do not open or close doors during free-roam time and keep drawers fully shut
Falls
Climbs curtains and falls. If it does not move, drags a leg, or has a nosebleed after a fall, see the vet the same day
Escape
Escapes through mesh gaps or when doors open. If it gets loose, close off the room and set out an open cage with the nest box and favorite food to recover it at night
How to safely release a bite
Never do this
- Pulling away or shaking it off. Teeth break and the wound deepens
- Shouting or hitting. It panics and bites again
Safe release procedure
- Stop moving and wait a few seconds for it to let go
- If it does not let go, lower its body toward a cloth or the cage
- Blow gently on its muzzle or let its feet touch the floor
- Once it lets go, put it straight into the nest box and leave it alone for a while
After the release
Wash under running water for 5 minutes and disinfect. If there is swelling, heat, or pus, see a doctor. Ask about tetanus too
Emergency care manual
Go to an emergency vet now (life-threatening)
- Cold and unresponsive; shallow breathing
- Seizures; arching the body
- Bleeding that will not stop; a leg hanging limp
- Rapid, open-mouth breathing
See a vet the same day
- Not eating or passing stool for half a day or more
- Cheek pouch stays swollen; mouth will not close
- Abnormal movement after a fall
What to tell the vet & what to bring
Species, age, diet, photo of stool, weight changes. Details of any fall or bite
Checking consciousness, breathing & heartbeat
- Breathing: chest movement. Normal is 60–100 per minute
- Heartbeat: place a finger on the chest. 200–300 per minute
- Consciousness: call its name and touch the body to check the response
Resuscitation steps
- The small body is easily injured, so prioritize transport
- If breathing stops, cover nose and mouth with a cloth and give gentle breaths
- If the heart stops, compress the chest with your thumb at about 200 per minute
- If no response after 1 minute, continue while transporting
Stopping bleeding
- Press with clean gauze for 5 minutes
- For tail or leg bleeding, gently compress at the base
- If it does not stop, keep pressing and transport
Transport
- Line a small box with cloth; stick heat packs on the outside of the box
- Keep dark and quiet; transport by car without jolting
Learn with the case method
Case method (50 scenario questions)
Multiple-choice scenarios covering illnesses, injuries and accidents that can happen to Squirrels, with answers, explanations, issues and improvements.
Start the questions
https://exoticpetsaver.com
For hands-on training, join a course. Scan the QR code with your phone (courses are held in Japan, in Japanese).