I am so glad I found this! I am new to the squirrel world, but welcome it with open arms. I rescued a baby fox squirrel 4 nights ago. Although I did everything my licensed help told me to do, mommy never came back. He and I don't talk about it... it's a sensitive subject . I sent pictures, and was told that he is 3 almost 4 weeks old. He eats like a pig, pees regularly and poops just about every other feeding. He seems healthy, but only weighs 55g. He seems long and lean, but not boney. I am feeding him 3.5-4cc every 4 hours. Maybe a runt? He yells at me when the food is gone, trying to convince me that he is still starving. Just wondered if he may need more food, or if this is within a healthy weight? He is on Esbilac puppy formula. Squirrel Mom in training