We have had Duke for about 6 weeks now. He is a very jealous puppy and barks if you, or even Cassie, won't play with him or if you are petting another dog, or giving my skin son a hug he barks and barks until you give him attention. It doesn't matter if you had just been playing or snuggling with him. The second he sees you with someone else he barks for attention or nips at you. Cassie has snarled and given him warnings, he backs off for a second and goes right back at it.
We got him when he was 8 weeks and one day old. Not sure when his litter mates left. I have tried redirection, giving him the attention and ignoring him. My husband wants to get him a bark collar to stop it. I don't.
Is there anything I can do to correct the barking and jealous behavior?