My wife and I have a hedgehog named Appa who will be four months old as of today. About a week ago she started biting my wife when she was pulling Appa from her cage and just the other night she bit me a few different times. When she bit us neither one of us were petting her spines. Is it possible that she is getting her adult quills in or is she really grouchy? If this is the case, what is the best way to handle her when she avoids us like the plague or bites us? About how long can we expect the quilling to last? We have Appa in a Critter Nation cage so we couldn't approach from the top.