Is this how Dogs argue ?

Not my dog. He thinks he is a human and that the sofa belongs to him.

My old dog looked at everyone who was black or dark clothes or a dark dog like they were demons. It didn't occur to me at first but then it happened today when I pet a dog and my boyfriend in all dark stood beside me and suddenly the dog starts showing her teeths and becomes a mini wolf and look at my bf like he's the reaper. Some dogs don't like big dark moving things.