please can someone advise me, I have a 9 month old setter, who is 2 weeks into her first season, She has had a complete personality change. She has bitten me twice, she is constantly attacking my other 2 bitches (lab, springer), it appears she has gone deaf, completely ignoring me, shes off her food, shes lethargic, moody, grumpy. Is this normal ? my other 2 bitches never behaved this way. Any advice greatly received.