Agressiive Rat Terrier male neutered at 5 is about 5
(Bradford PA USA)
Buddy just started getting aggressive. If he has to move out of the spot if on the couch or in a bed in someone's spot. He will grown then show his teeth look you in the eye and get worse and more aggressive. He is getting worse upon being told no and a finger pointing at him and saying no. In just a couple days he has gotten much worse. He has been going between home, his Great Grandmothers and Grandmothers homes. Human ones. He is this way at all 3 places. He does this to the ones he loves and trusts. We put him on a short leash today and took him into the kitchen to sit. Any advice appreciated.