Native Japanese snakes

Internal parasites

SignsIn wild-caught snakes: worms or mucus in feces, regurgitation, weight loss, loose stool, getting thinner with every shed

PreventionHave a fecal exam done right after acquiring a wild-caught snake. Choose captive-bred animals. Discard feces every time and clean the enclosure

Food refusal

SignsNo eating for weeks, spine becoming visible. Forest rat snakes refuse due to wrong prey type or heat; wild-caught snakes refuse after environmental change

PreventionOffer forest rat snakes pink mice at cool temperatures. Add hides and keep out of sight. Never force-feed

Incomplete shed (dysecdysis)

SignsSkin left in patches, eye caps retained and still cloudy, tail-tip skin turning dark and tight

PreventionRaise humidity before a shed and provide a wet hide with sphagnum moss. Always keep a water bowl the snake can soak in

Mouth rot

SignsYellow-white pus inside the mouth, mouth will not close, drooling, swollen or bleeding gums, not eating

PreventionAvoid low temperatures and poor hygiene. Thaw frozen prey completely. Add hides for snakes that keep rubbing their snout on the walls

Mites and ticks

SignsBlack specks between scales or around the eye rims, long soaking in water; wild-caught snakes may carry engorged ticks on the skin

PreventionQuarantine newcomers in a separate room for 1–2 months. Check wild-caught snakes all over on arrival and have the vet remove parasites

Respiratory infection

SignsOpen-mouth breathing, bubbles at the nostrils, holding the head up without moving, wheezing or gurgling in the mouth

PreventionAvoid nighttime chill and humidity high enough to cause condensation. Hibernate only healthy snakes, lowering the temperature gradually

Thermal burns from heaters

PreventionMount the heat mat outside the enclosure so the snake cannot touch it. Control with a thermostat

First aidCool the area with room-temperature water. Do not touch blisters or peeling skin; cover with dry gauze and see the vet the same day

Snout and rostral abrasions

PreventionCaused by rubbing the walls trying to escape. Add hides and use glass or plastic enclosures, not wire mesh

First aidPress bleeding lightly with clean gauze. See the vet if it swells or oozes pus. Use newspaper as substrate until healed

Spinal injury

PreventionSupport the whole body with both hands when holding. Prevent falls from height and getting caught in doors

First aidDo not move the snake; lay it gently on a cloth and transport in a box without bending it. Twisting or any part that cannot move means see the vet immediately

Bites during feeding

PreventionFeed with tongs and wash the scent off your hands. Live rodents will bite the snake

First aidThese snakes are non-venomous. Rinse under running water and disinfect; see a doctor if a tooth is left in the wound. Check the snake's mouth for injury and see the vet if pus appears

Salmonellosis

RouteHand to mouth after touching feces, the water bowl or the snake's skin

PreventionAlways wash hands with soap after handling. Never wash the water bowl in the kitchen. Do not let infants or toddlers touch the snake

Tick-borne infections

RouteTicks on wild-caught snakes bite people

PreventionCheck wild-caught snakes all over on arrival. Never crush ticks by hand; have them removed by a doctor. See a dermatologist if fever develops

Sparganosis

RouteRaw flesh or body fluids of wild snakes that have eaten frogs

PreventionNever eat snake raw. Feed captive snakes frozen mice rather than frogs. Wash hands after handling feces

Bacterial infection of bite wounds

RouteOral bacteria from the snake enter the bite wound

PreventionIf bitten, rinse under running water and disinfect. See a doctor by the next day if it turns red, swells or feels hot

Food

• Frozen mice, fully thawed and warmed to about body temperature, once a week
• Adults: one prey item as thick as the thickest part of the body
• Forest rat snakes take only pink or fuzzy mice; rat snakes also accept quail

Water

• A heavy bowl the snake can soak in, with fresh water every day
• Watch for running out of water before a shed and in summer; soaking is normal

Toys & play

• For rat snakes, a thick climbing branch fixed securely in place
• For striped snakes, floor space and room to move around
• For forest rat snakes, substrate deep enough to burrow in

Nest, bed & hideout

• At least two dark hides the body fits snugly into
• A wet hide with damp sphagnum moss for shedding

Bedding & litter

• Newspaper or paper towels (clean and easy to manage)
• For forest rat snakes, a thick layer of coconut fiber or leaf litter
• Replace as soon as soiled; wood chips risk ingestion and condensation

Cage / housing material

Glass or plastic enclosure. Wire mesh injures the snout and allows escape through gaps

Size & space

Width at least half the snake's total length; 90 cm or more for rat snakes

Layout

• Create a cool side and a warm side for a temperature gradient
• Hides at both ends, water bowl on the warm side
• Always lock the lid; vents must be too narrow for the head to fit

Placement notes

• A quiet spot with little foot traffic, out of direct sunlight
• For hibernation, provide a stable dark place at 5–10°C

Exercise, free-roam & walks

• No walks needed. Handle briefly 1–2 times a week
• Do not handle for 3 days after feeding or before a shed
• If let out in a room, seal doors and gaps and never look away

Temperature & humidity

Temperature22–28°C, hot spot 30°C. Forest rat snakes 20–25°C

Humidity50–70%. Higher before a shed, but avoid condensation

Summer & winter

• Summer: cool down above 30°C. Summer food refusal in wild-caught snakes is within normal range
• Winter: heated keeping is safest. Hibernate only healthy snakes, starting on an empty stomach

Nail trimming

No claws. Instead, inspect the skin after each shed; if eye caps or tail-tip skin remain, soak in lukewarm water

Brushing, skin & coat care

Check between scales for mites and wounds weekly. A lukewarm soak helps with shedding

Other care

Check the mouth for pus, the snout for wounds and the vent for soiling at every feeding. Record weight monthly

Protection from predators

• Keep the enclosure away from dogs, cats and ferrets; always lock the lid
• Do not take it outdoors where crows or raptors come
• An escaped snake may be attacked by other snakes or stray cats

Foreign-body ingestion

May swallow substrate with the prey. Feed with tongs and use newspaper rather than wood chips. See the vet if no feces pass and the belly swells

Being stepped on

Family members stepping on a snake let out on the floor is a common accident. Tell the family when it is out and never look away while it is on the floor

Getting pinched

Getting caught in a lid or door causes spinal injury. Check where the whole body is before closing. If caught, do not pull; open slowly

Falls

Rat snakes climb high and fall. Never leave one on a shelf or your shoulder unattended. If it moves sluggishly after a fall, see the vet

Escape

Escapes through narrow gaps. Lock the lid and seal gaps. If it escapes, search dark narrow spaces and behind warm appliances, and notify the neighbors

Safe release procedure

1. Stay still and calm. It is non-venomous, so do not panic
2. Push the bitten area in toward the snake's head
3. Bring the smell of water or rubbing alcohol near its mouth
4. Once it lets go, return it to the enclosure and leave it alone

After the release

Rinse under running water and disinfect. See a doctor if a tooth is left in, or there is swelling or heat. If a venomous snake is suspected, go to the emergency room immediately

What to tell the vet & what to bring

Species, source (collection site), weight history, last feeding and shed dates, enclosure temperature; bring feces and vomit

Checking consciousness, breathing & heartbeat

• Check consciousness: does it flick its tongue or twist when touched?
• Check breathing by the rise of the mid-body; normal is 1–2 breaths/min
• The heart is about 1/4 of the body length from the head; feel the beat with a finger

Stopping bleeding

• Press the area with clean gauze for 5 minutes or more
• Avoid styptic powders and strong pressure
• Bleeding that will not stop or comes from under the scales needs the vet

Transport

• In a cloth bag, dark and quiet. Pad a box with towels to keep it still
• In winter, wrap a hand warmer in cloth and place it outside the bag, never in direct contact