I am sure this topic has come up time and time again, but unfortunately I don't have time to look through the archives. My ferret, Rascal Booger, is turning 4 this September. He is healthy, as far as I can tell. I take him to the veterinarian for his annual vaccines. He has maintained a normal eating routine, his feces are normal. However, one thing has changed recently: the frequency of biting. Rascal has never been a biter. Whenever I played with him, he would give friendly nips, much like a cat does, as a form of communication when playing. But within the last month, he has started to bite HARD. He latches onto my wrist and bites down, as hard as he can. And it HURTS. He has not drawn blood, but I am wondering if this change in behavior is indicative of any health concerns? Increased testosterone? Melanie [Posted in FML 6374]