So, you’ve found a baby squirrel or maybe you just want to treat the little critters that visit your yard. Naturally, you’re probably wondering if milk is good for them. Here’s the thing: baby squirrels actually need a special, vet-approved milk formula. Cow’s milk or regular pet milk? Those can cause diarrhea and dehydration. It’s a bit surprising, but picking the wrong milk does more harm than good.
Let’s talk about when milk is safe, which types you should avoid, and what wildlife caregivers actually use to keep orphaned squirrels healthy. Stick around for feeding tips that’ll help you protect tiny squirrels and act quickly if you find one in need.
Can Squirrels Drink Milk?
Baby squirrels need a very specific diet. Adult squirrels don’t rely on milk for hydration or nutrients at all. If you feed the wrong milk, you can cause diarrhea, dehydration, or leave a squirrel with nutrient gaps. Wildlife rehabilitators use formulas made for small mammals, and honestly, that’s the safest route.
Lactose Intolerance in Squirrels
Most squirrels lose the ability to digest lactose just a few weeks after birth. If you give a young squirrel cow’s milk, the lactose goes undigested and causes loose stool pretty quickly. That means dehydration shows up fast, and for a weak or orphaned baby, that’s a big risk.
If you absolutely have to feed a baby squirrel, grab a veterinary-approved milk replacer or a formula designed for puppies or wildlife. These usually have less lactose and more fat and protein, which is closer to what squirrel milk provides. Always warm the formula to about body temperature and feed slowly so the squirrel doesn’t choke or inhale the milk.
Risks of Feeding Milk to Squirrels
Giving the wrong milk leads to diarrhea, weight loss, and electrolyte problems. Diarrhea can be fatal for a tiny squirrel in just a day or two if you don’t treat dehydration right away. Cow’s milk and human breast milk just don’t have the right fat-to-protein ratio or minerals that squirrels need.
You also risk choking the squirrel if you feed too quickly or with the wrong technique. Imbalanced calcium and phosphorus can mess with bone growth. If you find an orphaned squirrel, don’t try to improvise milk solutions at home—call a licensed rehabilitator or vet as soon as you can.
Differences Between Squirrel and Other Animal Milks
Squirrel mother’s milk has more fat and different proteins than cow or human milk. That helps baby squirrels build up fat stores and prepare to eat solid foods. Puppy milk replacers and certain wildlife formulas come a lot closer to matching those ratios than regular dairy.
Avoid using evaporated milk, cow’s milk, or plain goat milk as a long-term fix. Those just don’t have the right nutrients, and the lactose or proteins can be rough on a squirrel’s gut. When you can, follow feeding schedules and volumes from a rehabilitator to help the squirrel grow naturally.
Feeding and Hydration for Baby and Orphaned Squirrels
If you find a baby or orphaned squirrel, focus on keeping it warm and hydrated first. After that, use the right formula, in the right amount, and feed at the right angle to avoid aspiration.
Special Milk Needs for Baby Squirrels
Baby squirrels need milk that’s high in fat and protein, just like their mother’s milk. Their digestive system can’t handle cow’s milk or plant-based milks. If you feed the wrong kind, you’ll see diarrhea, bloating, and fast dehydration.
Use a formula made for small mammals. Mix it the way the package says and warm it up to about 100°F. Feed small amounts often—newborns usually eat every 2–3 hours. Hold the squirrel upright or at a slight angle; never feed it on its back. Watch for coughing or bubbling at the nose, which means milk’s gone the wrong way. If that happens, stop feeding and keep the squirrel upright until it’s breathing normally.
Why Human Breast Milk Is Not Appropriate
Human breast milk just isn’t a good substitute for squirrel milk. It has different fat, protein, and mineral levels, and it won’t meet a squirrel’s rapid growth needs. Feeding human milk can lead to poor weight gain and stomach problems.
If human breast milk is all you have, don’t use it. Instead, offer a little pediatric electrolyte solution to keep the squirrel hydrated until you get the right milk replacer. Reach out to a licensed wildlife rehabilitator quickly—they can guide you and might even supply the right formula.
Safe Milk Replacers and Feeding Guidelines
The best milk replacer for orphaned baby squirrels is usually a puppy milk replacer like Esbilac. It matches squirrel mother’s milk better than cow’s or plant milks. Follow the mixing instructions on the package.
Feed with a syringe or tiny nursing bottle. For very young squirrels, aim for 5–7% of their body weight per feeding, but weigh the animal each day to adjust as needed. Warm the formula to about 100°F and feed slowly. Never force-feed or pour formula into the squirrel’s mouth. If you can’t reach a rehabilitator right away, try to find Esbilac at a pet store or order it online before giving any other milk.
Importance of Water for Squirrels
Water’s important, but honestly, formula gives most of the fluids a very young squirrel needs. If you notice the kit looks dehydrated, grab some unflavored pediatric electrolyte solution—Pedialyte works well—and offer it in small syringes.
Skip plain water for newborns. It doesn’t replace lost salts and, honestly, can make them aspirate.
Once the squirrel starts eating solids, usually after a few weeks, you can set out some fresh, shallow water. Make sure you keep it clean and swap it out every day.
When older orphans begin to figure out foraging, try putting water in a low dish. That way, they can drink easily and you won’t have to worry as much about tipping or drowning.
