Squirrels start being weaned at about six weeks old, at which time you can start to introduce solid foods. If he is younger, he should get his nutrients completely from the formula Esbilac. While Kitten Milk Replacement Formula (KMR) is used for mice and other baby animals, some squirrel rehabilitaors prefer using the Esbilac. Also, do NOT give him cream as someone suggested, as that is cow’s milk. Cow’s milk is very bad for the baby squirrel’s digestive system. Use one part Esbilac diluted by two parts water.
Check first to see if your little one is dehydrated. Gently pinch the skin above his shoulders. It should immediately spring back. If it does not, you can use unflavored Pedialyte to get him rehydrated. Administer it the same way as the formula: a 1cc (best) to 3cc size non-needle syringe. Be very careful when you feed him these, as he can aspirate if he drinks too quickly and the liquid gets into his nose and lungs. If you see the formula or Pedialyte coming out of his nose in bubbles, then it went where it should not have gone. To prevent pneumonia from settling in, tip the baby forward so his head is pointing down. The liquid will drain out of his nose by itself.
For Squirrels that are a bit older:
Daily Recommendation: 2 – 4 small blocks
Harlan Teklad Rodent Diets
KayTee Forti-Diet for Rats and Mice
Vegetables that are High in Calcium
Daily Recommendation: 5-7 small pieces
Daily Recommendation: 2-3 small pieces
Wild and Natural Foods:
Daily Recommendation: unlimited while in season.
whatever the wild squirrels outside in your neighborhood are eating is what’s natural to their diet. Be careful while gathering them and rule out that the area hasn’t been treated with pesticides.
live or dried mealworms
Daily Recommendation: 2 slices
Nuts and Seeds:
Daily Recommendation: 2 nuts, still in shell.
roasted unsalted pumpkin seeds
sesame seeds (high in calcium)
Something to Chew On:
CAUTION: SOME SEEDS AND PITS CAN BE TOXIC.
FOODS TO AVOID:
The squirrel diet varies with the seasons and the availability of plant material (such as nuts, fruits, flowers, and plant buds) that almost entirely makes up the animal’s larder. Squirrels also occasionally eat bird eggs or nestlings, and may even pounce on small birds at feeders-much to the dismay of human witnesses who assume that squirrels are passive vegetarians.