hi , i had a thread two weeks ago where i was looking for advice on cavaliers , well still haven't gotten our pup yet but my sister has gotten a springer spaniel 10 days ago , he is only 8weeks & 4 days old but yesterday has started to growl & nip her dc's she is getting nervous of him i think the biting is normal as all pups nip & chew everything they get their mouths around , but the growling ? is that also normal ? TIA