He is a rescued dog so not sure how old but approx. 5 years.
Male - yes.
No formal training.
Very aggressive with anyone coming near my car or house(even walking past my house). Anyone on a bike or running . In fact lots of different situations. Seems to be getting worse.
No physical reprimands as far as I know. I have no knowledge of what his life was like before I had him. He was abandoned following a car accident and picked up from the roadside by the RSPCA.
I have had him for 2 years.
He has been neutered and chipped by the RSPCA..