God that really, really sounds like a rough day but after reading all I really believe your frustration was coming from somewhere else. You`re not a piece of crap just human but sometimes when everything is getting on your nerves it`s just better to pull away from the situation so you don`t hurt others with your words.I am also an animal lover and yes dogs do feel tension wether with you or anyone else in the house. Every dog is different maybe this dog needs more patience. I`m glad you laughed with your son after cause seeing our parents like this can really hurt. I hope you`re doing better & getting the help you need can calm you down Good luck!