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What Temperature Should Baby Squirrels Be Kept At?

Warmth comes before food, always. The safe way to warm a found kit, why direct heat burns, and the signs that it is warm enough to be moved.

By Salma 4 min read Save to Pinterest — opens Pinterest in a new tab
A naked newborn squirrel curled on a soft cream blanket
Photo: Alexas_Fotos, Pixabay Content License, via Pixabay
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Warmth comes before food, always. A cold kit cannot digest, so feeding one kills it. Gentle indirect heat, a quiet dark box, and a phone call are the whole of what a bystander should do.

Why they chill so fast

agethermoregulation
0–2 weeks, naked and pinknone at all; entirely dependent on the nest and littermates
2–4 weeks, fine fur appearingvery poor
4–6 weeks, fully furredimproving, still limited
7 weeks and upreasonable, and starting to leave the nest

A drey works because it is insulated, enclosed, and holds a mother and several kits pressed together. On open ground, none of that applies, and a naked kit cools in minutes.

That is why so much of what follows is about heat rather than food. Hypothermia is what is actually killing the animal while people look for milk.

How to warm one safely

  1. A bottle or sealed container of warm water — warm to the inside of your wrist, not hot
  2. Wrap it, or put it under a folded towel
  3. Lay the kit on the towel, so the heat reaches it through a layer
  4. Cover the box loosely. Quiet, dark, out of draughts
  5. Leave half the box unheated, so it can move away if it gets too warm
  6. Check it every 20 minutes and refresh the water as it cools

What burns kits

Heating pads on anything above the lowest setting, hot water bottles against bare skin, hair dryers, radiators and heat lamps. A weak kit cannot crawl away from heat, and the skin damage happens without any struggle to warn you. Always warm through a layer and always leave an escape side.

Signs it is warm enough

  • Body feels warm to the back of your hand, not cool
  • Responsive — moves, squirms, curls when touched
  • Breathing is steady and quiet, mouth closed
  • No longer limp

A kit that stays limp and cool after an hour of gentle warmth is in trouble that heat alone will not fix.

What not to do, in order of how often it happens

  1. Do not feed it. Cow’s milk and human infant formula cause fatal diarrhoea. Feeding a cold kit causes food to ferment in the gut. Feeding at the wrong angle causes aspiration pneumonia
  2. Do not give water by syringe. Same aspiration risk
  3. Do not bathe it. Wet plus cold is worse than cold
  4. Do not keep it. Raising a wild squirrel requires a licence in most places, and hand-raised squirrels are frequently unreleasable and become aggressive at maturity
  5. Do not handle it more than necessary. Stress costs an already-struggling animal

Then give the mother a chance

If the kit is warm, uninjured, and the nest tree is identifiable:

  • Open shallow box at the base of the tree, in shade
  • Keep the warm bottle underneath
  • Cats and dogs kept well away — this is the part that decides it
  • Withdraw and watch from a distance for two to three hours

Mothers retrieve kits routinely, carrying them clamped against the belly, and will move a whole litter to another drey if the first has been disturbed.

When to call a rehabilitator

Call your state or regional wildlife agency for the licensed rehabilitator list if:

  • The kit stays cold or limp after warming
  • Nobody has come after two to three hours
  • There is blood, an injury, or flies, fly eggs or maggots on it
  • Breathing is laboured, open-mouthed, bubbling or clicking
  • The mother is known to be dead
  • Anyone has already fed it

The call is free. The rehabilitator has the incubator, the correct formula and the antibiotics, and is the only legal route in most places.

Common questions

How warm does a baby squirrel need to be?

Warm enough that its body feels warm to the back of your hand rather than cool, and it is alert and responsive rather than limp. Unfurred kits cannot regulate their own temperature at all and lose heat extremely quickly away from the nest and their littermates. The practical target is gentle, steady, indirect warmth — not a specific number you can measure through fur with a household thermometer.

How do I safely warm a cold baby squirrel?

Indirect heat only. Put a bottle or sealed container of warm — not hot — water under a folded towel, and lay the kit on the towel in a covered box. The warmth should reach it through a layer, never against bare skin. Give it room to move off the warm side if it gets too hot. Keep the box somewhere quiet and dark, and do not feed it while it is cold.

Can I use a heating pad for a baby squirrel?

Only on the lowest setting, under half the box and under a towel, so the kit can move away from it. Heating pads are the usual cause of burns in found kits, because an animal too weak to move cannot escape the heat and skin damage happens silently. If you are unsure, a warm water bottle under a towel is safer, and a rehabilitator will have a proper incubator.

Why must a baby squirrel be warm before it is fed?

Because a cold kit cannot digest. Food given to a chilled squirrel sits in the gut and ferments rather than being absorbed, and the animal dies of that rather than of hunger. Warming first is the rule rehabilitators work to, and it is why the correct response to a cold kit on the ground is heat and a phone call rather than a syringe of milk.

How long does it take to warm a cold kit?

Longer than people expect — a chilled kit may take an hour or more of gentle indirect warmth before it is responsive and moving normally, and rushing it with stronger heat causes burns and shock. Use that time to find and call a licensed wildlife rehabilitator, because a kit cold enough to need warming is one that needs professional care regardless of how it looks afterwards.

Should I put a baby squirrel back outside once it is warm?

If it is uninjured and the nest tree is known, yes — give the mother the chance. Place it in an open box at the base of the tree, in shade, with the warm bottle still underneath, keep cats and dogs away, and watch from a distance for two to three hours. Mothers routinely retrieve. If nobody comes, or the kit is injured, bleeding or fly-blown, call a rehabilitator.

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