Primates
Squirrel monkey
Highly active, highly intelligent, cannot be litter-trained, needs lots of exercise
Most important: Cannot be toilet-trained. Needs several hours of exercise every day
Basics
- Lifespan
- 15–20 years (over 25 in captivity)
- Weight
- 600 g–1.2 kg
- Temperament
- Extremely active and curious. Lives in troops
- Care difficulty
- Very high (legal restrictions, exercise needs, elimination, high intelligence)
- Legal status
- Import banned under the Infectious Diseases Control Act (since 2005); CITES Appendix II
- Key point
- Cannot be toilet-trained. Needs several hours of exercise every day
Ecology & traits
- Body
- Body 25–35 cm, tail about 40 cm, not prehensile. White face with black muzzle. Large brain for its body size
- Origin & range
- Central and South America (Amazon basin and Central American tropical forests)
- Wild habitat
- Mid-level of tropical rainforest. Prefers riverside forest and lives in the trees
- Activity & sleep
- Diurnal. Moves almost constantly by day; sleeps in the trees in a group at night
- Social behavior & people
- Lives in large troops of dozens to hundreds. Solitary keeping is highly stressful
Characteristic behaviors
- Rubs urine on its tail, hands and feet to scent-mark territory and companions
- Calls back and forth within the troop; alarm calls warn of predators
- Travels several km a day through the trees in search of insects and fruit
Common illnesses: warning signs & prevention
Metabolic bone disease
SignsLimping, falling from branches, fractures, curved spine
PreventionPrimate pellets with vitamin D3 plus a calcium supplement. Install a UVB lamp. Avoid a fruit-heavy diet
Diabetes / obesity
SignsExcessive drinking and urination, weight gain, dull coat, cataracts
PreventionLimit fruit and sweets; base the diet on pellets, vegetables and insects. Weigh weekly and ensure exercise
Periodontal disease / tartar
SignsBad breath, drooling, avoiding hard food, facial swelling, brown teeth
PreventionHard pellets, insects and branch-chewing clean teeth naturally. Yearly oral exam and tartar removal
Intestinal parasites / bacterial enteritis
SignsDiarrhea, mucus in stool, bloody stool, weight loss, vomiting
PreventionFecal exam at intake and twice a year. Remove droppings from the floor daily. Avoid raw food
Respiratory infection
SignsCoughing, sneezing, runny nose, rapid breathing, reduced appetite
PreventionCatches human colds. Wear a mask and wash hands when you are unwell. Avoid temperature swings
Stress-related self-injury
SignsBiting the tail or arms, hair loss, stereotypic behavior, constant screaming
PreventionAvoid solitary keeping. Provide daily foraging puzzles, exercise time and social contact
Warning-sign checklist
Check once a day. If even one applies, contact an animal hospital early.
First aid for illness
Persistent diarrhea or vomiting
Bag the stool/vomit and photograph it. Keep warm with water available. Bloody stool or lethargy: see a vet now; if it lasts 2 days, see a vet the same day
Coughing or rapid breathing
Pneumonia worsens fast. Keep warm and humid, rest, and see a vet the same day. Open-mouth breathing: see a vet now
Limping
Possible fracture or metabolic bone disease. Remove branches, rest in a low cage, and get an X-ray at the vet the same day
Limp and cold to the touch
Hypothermia or low blood sugar. Warm with a hand warmer wrapped in a towel or cloth; if conscious, dab sugar water on the corner of the mouth. See a vet now
Common injuries: prevention & first aid
Fractures from falls or collisions
PreventionCover light fixtures, fans and window glass. Secure branches firmly and put thick bedding on the floor
First aidDo not handle; keep warm and quiet in a dark box. No splint needed. See a vet the same day
Bite wounds from cage mates
PreventionWatch for rank disputes. Provide multiple hides and feeding spots; introduce newcomers gradually
First aidRinse the wound under running water and separate from the attacker. Bleeding or swelling: see a vet the same day
Electric shock / burns
PreventionCover all electrical cords or put them in cable boxes. Put guards on heaters
First aidSwitch off the power before touching. Cool burns with a cold wet towel and see a vet
Trapped tail or fingers
PreventionCheck where the tail is before opening or closing doors. Close cage doors slowly
First aidPress bleeding with gauze. If the tail hangs limp or is bent, see a vet the same day
Zoonoses (diseases that can spread to people)
B virus infection
RouteBites, scratches and saliva of monkeys (mainly macaques)
PreventionIf bitten, rinse under running water for 15+ minutes and seek medical care immediately. Do not handle bare-handed
Tuberculosis
RouteCoughing, droplets, close contact (also spreads from humans)
PreventionCoughing or weight loss: see a vet now. Keepers should have a yearly health checkup
Salmonella / Shigella
RouteFeces, urine, contaminated hands and equipment
PreventionThey eliminate anywhere. Always wash hands with soap after care
Herpes (from humans)
RouteHuman cold sores via saliva or mouth-to-mouth feeding
PreventionHuman herpes is fatal to them. No mouth-to-mouth feeding or kissing. Do not handle when you have mouth sores
Husbandry: food, water, toys, nest, bedding
Food
- Staple diet: primate pellets (with vitamin D3)
- Twice daily, morning and evening. Vegetables, insects, boiled egg and a little fruit as side foods
- Hide food so they forage and spend time eating
Water
- Replace both the water bottle and dish daily
- Changes in water intake signal illness. Check visually
Never feed
- Human sweets, chocolate, dairy, avocado
- Large amounts of sweet fruit (diabetes, obesity)
- Raw meat, raw egg, wild-caught insects
Toys & play
- Puzzle feeders and perforated balls with hidden food
- Rotate ropes, hammocks and swings
- Foraging play: release live crickets to chase
Nest, bed & hideout
- Wooden nest box at the very top, large enough for the group to sleep together
- Line the nest box with fleece and wash it twice a week
Bedding & litter
- Cannot be toilet-trained. Cover the entire floor with pet sheets
- Change floor sheets daily; wash branches and shelves weekly
- Do not use softwood shavings, cat litter or sand
Housing: cage, exercise, temperature & humidity
Cage / housing material
Sturdy welded-wire metal cage (with padlock)
Size & space
At least 180 cm tall and 120 cm wide. As large as possible
Layout
- Nest box at the top; arrange branches and shelves in 3D and change them occasionally
- Two or more feeding and water stations up on branches. They do not eat on the floor
- Thick bedding on the floor to cushion falls
Placement notes
- Bright by day, dark at night. Install a UVB lamp
- Smart enough to open latches. Use a double lock on the door
Exercise, free-roam & walks
- Let them move freely in a safe room for 2–3 hours every day
- During free-roam time, close windows, turn off fans and never take your eyes off them
- Lack of exercise leads directly to stress and obesity. Combine with foraging puzzles
Temperature & humidity
Temperature22–28°C. Below 18°C is dangerous
Humidity50–70%
Summer & winter
- In summer, keep below 28°C with air conditioning. Avoid direct sunlight
- In winter, keep above 22°C around the clock with a panel heater
Grooming & protection from predators
Nail trimming
Worn down naturally on branches. If overgrown and catching on fabric, have the vet trim them. Restraint is dangerous as they struggle
Brushing, skin & coat care
Not needed. They groom each other. Unkempt fur or hair loss signals illness or social stress
Other care
They rub urine on hands and feet. Wipe dirt with a damp cloth. Yearly dental check. Check ears for dirt and odor
Protection from predators
- Never keep in the same room as dogs, cats or ferrets
- Close windows during free-roam time and control mosquitoes. Never take outdoors
- Keep away from balconies visited by crows or birds of prey
Care precautions (accident prevention)
Foreign-body ingestion
They put anything in their mouth and open drawers. Keep medicines, cigarettes, batteries and small items in locked storage. Vomiting or loss of appetite: see a vet
Being stepped on
They come underfoot and climb your clothes. Check the floor as you walk; return to the cage during chores or visits
Getting pinched
Tails and fingers get caught in doors, drawers and cage doors. Fix doors with stoppers during free-roam time and lock drawers
Falls
They climb high and fall from light fixtures and curtain rails. Cushion landing spots. If they cannot move after a fall, see a vet now
Escape
They open latches and escape. Double locks and locked windows. If they escape, lure with companions' calls and favorite food; do not chase
How to safely release a bite
Never do this
- Pull your hand away to break free (deepens the wound)
- Hit or shout (they get excited and bite repeatedly)
Safe release procedure
- Stay still and calm. Get a thick towel
- Cover the body and face with the towel to darken
- Once released, return to the cage still wrapped in the towel
- Rinse the wound under running water for 15+ minutes and disinfect
After the release
Deep wounds, swelling or fever: seek medical care the same day. Always tell the doctor it was a monkey bite
Emergency care manual
Go to an emergency vet now (life-threatening)
- Seizures, unconscious, cold to the touch
- Open-mouth or rapid breathing
- Cannot move after a fall or electric shock
- Bloody or watery stool with lethargy
See a vet the same day
- Not eaten for 24 hours
- Diarrhea or vomiting for 2+ days
- Persistent coughing, runny nose or sneezing
What to tell the vet & what to bring
Weight history, diet, stool photos, status of cage mates. Find a vet who sees primates in advance
Checking consciousness, breathing & heartbeat
- Call its name and watch for a response. Normal body temperature is 37–39°C
- Count breaths by chest movement. About 30–50 per minute
- Place a hand on the chest to check the heartbeat. 150–250 per minute
Resuscitation steps
- If not breathing, clear any foreign object from the mouth
- Squeeze the left side of the chest between thumb and index finger, 120 compressions per minute
- After every 5 compressions, blow a small breath into the nose
- Keep going while calling the vet and follow their instructions
Stopping bleeding
- Press with clean gauze for 5+ minutes. Do not lift it to check
- For tail or limbs, press lightly on the heart side
- Heavy or unstoppable bleeding: see a vet now
Transport
- Darkened carrier lined with a towel; wrap hand warmers in cloth
- Transport with a companion if possible. Keep the car above 22°C
Learn with the case method
Case method (50 scenario questions)
Multiple-choice scenarios covering illnesses, injuries and accidents that can happen to Squirrel monkey, 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).