Ever wondered if giving milk to a squirrel actually helps or just causes trouble? Most adult squirrels really shouldn’t drink cow’s milk, and baby squirrels actually need a special formula—not whatever’s in your fridge—to stay healthy. That’s a surprisingly important fact, since the wrong milk can leave a wild animal dehydrated or with an upset stomach.
If you’re caring for a baby or stumble across an orphaned squirrel, you’ll want to know what to do next. This post covers why water works best for adults, which formulas help little ones, and how to get proper help without making things worse.
Can Squirrels Have Milk Safely?
Wild squirrels don’t drink milk as part of their usual diet. Giving them milk can mess with their digestion, hydration, and growth.
If you find a baby squirrel, you should use special milk replacers. Cow’s milk or other dairy products just aren’t safe for them.
Why Squirrels Can’t Digest Regular Milk
Squirrels don’t have much lactase, the enzyme needed to break down the lactose in cow’s milk. When you give them dairy, the lactose just sits there and ferments in their gut.
That ends up pulling water into the intestines, causing diarrhea. For a tiny squirrel, diarrhea can quickly lead to dehydration.
Mother’s milk from a squirrel packs way more fat and protein than cow’s milk. So, regular milk just doesn’t give baby squirrels what they need to grow strong.
Adult squirrels? They’re not looking for milk anyway. They get their moisture and energy from nuts, seeds, fruits, and even plant sap.
Risks of Giving Milk to Squirrels
When you feed a squirrel cow’s milk, you risk causing loose stools, bloating, and stomach pain. For babies, diarrhea can be deadly—they lose fluids and body heat fast.
Feeding the wrong way or too quickly can also make them choke, which sometimes leads to pneumonia. Dairy can make squirrels rely on humans instead of learning to forage.
Spoiled milk attracts unwanted animals and spreads bacteria. If you find an injured or orphaned baby, reaching out to a licensed wildlife rehabilitator is always the safer move than guessing with household milk.
Recommended Milk Replacers for Baby Squirrels
Go for formulas made for small mammals. Kitten milk replacer (KMR) or puppy milk replacer work better as temporary options. They’re lower in lactose and closer in calories to what baby squirrels need.
If you can, use a formula made just for squirrels—wildlife suppliers or rehabbers sometimes have these. They match the right fat and protein levels.
Follow the mixing and warming instructions. Use a tiny nursing bottle or syringe with a soft tip.
Feed newborns every 2–3 hours. Burp them gently, and use a warm, damp cloth to help them pee and poop after each feeding.
If you’re unsure, it’s always smart to contact a local wildlife rehabilitator for advice on products and feeding schedules.
Caring for Orphaned and Baby Squirrels
You need to keep baby squirrels warm and hydrated, and feed them the right formula. Quick checks on their temperature, skin, and weight help you figure out what to do next.
Feeding Schedules and Proper Techniques
Feed newborn squirrels every 2–3 hours during the day. As they get older, you can stretch it to every 3–6 hours.
Weigh them each morning and look for steady weight gain. Use a syringe or a small, soft rubber nursing nipple—don’t force liquid or use a big bottle meant for other animals.
Hold the squirrel upright, head up just a bit. Drip the formula in slowly so they can swallow safely.
Don’t feed them on their backs or while they’re lying flat. Warm the formula to about 100–102°F (body temp) and test it on your wrist.
After feeding, gently rub their belly and private area with a warm, damp cloth to help them go to the bathroom.
If a baby chokes, stop feeding and keep it upright until it’s okay. If it refuses food or starts breathing weakly, call a wildlife rehabilitator right away.
For local rehab help, check out squirrel wildlife rehabilitation.
Can Baby Squirrels Drink Human Breast Milk?
Don’t give human breast milk to baby squirrels. It doesn’t have the right mix of protein, fat, or minerals for them.
Feeding breast milk can lead to diarrhea, slow growth, and even long-term bone issues. If you can’t get a wildlife formula, some rehabbers use diluted puppy milk replacer (Esbilac) for a few days until you get the right stuff.
Always rehydrate a dehydrated baby first using an electrolyte solution like unflavored Pedialyte in tiny amounts. For more details and age guides, check out How to Care for an Infant Squirrel.
Essential Nutrients and Hydration Needs
Baby squirrels really thrive on high fat and moderate protein. I’d recommend using a milk replacer made for orphaned squirrels or puppies—it’s important to pick one that fits the species.
Make sure the formula includes enough calcium, balanced with phosphorus. This helps prevent metabolic bone disease, which can sneak up on you if you’re not careful.
Once the babies start nibbling on solids, go ahead and offer clean water. But don’t ever water down their formula; that doesn’t give them proper nutrition.
If a baby looks dehydrated—think sunken eyes or slow skin return—provide some electrolytes. I like to weigh them daily and adjust calories as needed. Newborns need lots of small, calorie-rich feeds.
As they get older, around 5 to 8 weeks, start shifting them to solids like chopped nuts, fruits, and rodent block chow. Go slowly with solids and keep an eye out for diarrhea.
If you notice limb weakness, bone deformity, or poor weight gain, reach out to a vet or wildlife rehabilitator right away. For a detailed, age-based feeding guide, check out Squirrel University.
