We have a 12 week old jack russell cross poodle male puppy who has been with us for 4 weeks now. He has never listened to my husband and in fact growls and barks back at him when he disciplines him. For the most part the puppy is ok with me and I have taught him to sit and fetch the only problem I have is when he gets over excited and he goes a little crazy and bites me too hard. However my husband has always had a problem with the puppy listening to him and he never takes any notice of him. Please can someone give us some advice. My husband suggested getting him neutered to tone down his aggression but I do not know if this will really help.