Most likely something is wrong with it, a vet should be called
Goat milk is preferred. They can get alot more nutrients and strength from goat milk. Strength is obviously very important when raising a baby deer, so using goat milk would be your best choice.
goat would probably be the best for baby bunnies
It would have different formulations - it is preferable to feed your goat kid specifically produced goat milk formula or if you can't get that full cream powdered milk.
Breast milk is more healthy for a baby than any other kind of milk or formula. Cow's milk was meant for baby cows, and that milk benefits them the most. Same with goat milk, meant for baby goats. However, goat milk is closer to human milk than cows milk. So if by normal milk you mean cow milk, than this is your answer.
Nobody can "eat" milk.
It would be preferable to use powdered milk specifically produced for goats or if you can't get that full cream powdered milk.
Specially formulated powdered milk for lambs and kids
A mother goat's milk will build up if the baby dies, and dry out eventually if it is a meat or fibre goat. If it is a dairy goat, milking will be necessary, or the goat's udder will burst and no one will ever be able to milk it again. Kids on a dairy goat help keep the udder from, at best, distending, or at worst, bursting. Milking also helps the goat get used to the milking routine.
Female goats need to kid first before producing milk and the first milk produced is very important for the kid (baby goat) it is called colostrum.
No, most milk sold as "milk" is cow milk. Goat's milk has a distinctive, almost musky flavor and smell. You would definitely notice if you were drinking goat milk.
A female goat that gave baby Zeus her milk.
goat milk, it is easier to digest