A friend has 2 goats and one male sheep. Peppy is aprox 1 year old Alpine. Luna/Kitten is just under a year old nigerian dwarf (daughter of SP my goat). Rammy is the sheep he is older - in his teens. Peppy has begun to bite and eat the fur off the other animals. Rammy now has some patches missing. She is more mean to Rammy then Luna. Any ideas on why she might be doing this?