Well my friend used to give her hamster raw meat and now the hamster tries to bite everyone who wants to touch him. Can it be because of meat? I told my friend to change his diet but the question remains.
For sure the hamster cannot bite BECAUSE of meat but obviously it's not an acceptable type of food. I hope your friend takes heed of your advice.
omg did he really eat meat?? O_o i wouldn't ever think hamsters can do that!