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My 5 month old Jack Russell male constantly bites me when i arrive hope. He jumps and bites to the extent if i put my hand up and say no he starts to growl and lip curl. He then backs down but the behaviour is repeated. I dont think he does it out of agression rather an exicetment behaviour that gets to much for him.
After a walk or puppy park this behaviour stops. Its just of an afternoon or when i have been absent for a while. He does'nt do this to my male partner who does not live we me. Just to myself and my three adult daughters.
We have already attended puppy school and his behaviour is good otherwise.