I can't answer your question either but I suggest you reach into your purse and take out a 20 and tell your daughter to go to the shops and buy some sweets for herself. That will stop her asking questions you can't answer.
Im sure lemurs eat the whole of the banana, possible monkeys would eat the whole thing too...not much help i know but it might point you in the right direction to look further on the internet..x
A friend of mine owns a Staffy names Chester who loves bananas, skin and all - but I think he's an exception to the general rule !!
George, the very elderly Urang utan who lived in Adelaide Zoo for many years, was famous for peeling his bananas very precisely and eating them in a very tidy manner - I wish I had a photo to send.
Seekeerz - your friend should stop her dog eating the skin IMMEDIATELY - it contains toxins that dosg cannot deal with and will cause her damanage over time - much the same as grapes do in dogs!