Kei came from a pound in southern Illinois about 1 1/2 years ago at the age of about 10 months to a year. He was formerly owned by a drug dealer that let him run and was finally caught by ac there. He is aggressive to animals and people. He has escalated with his aggression to the point I'm scared to death if he ever got loose what he'd do. He gets into a frenzy so bad he will bite everything around him, like the fence,a shrub,anything near him. I understand he's frustrated hence the "bite everything" but good example, today I had both dogs in the car because I'm showing the house tryig to sell and need to have both out of the house. He saw a woman walking her dog and spazzed so bad he shredded my headrest,bit his own tongue and grabbed my shoulder and ripped my jacket.He was just hellbent on getting the dog. Corrections of , no,leave it,etc weren't even heard.He's so loving with me most of the time, but this behaviour is not ok., and I'm to the point I'm afraid to walk him on the street anymore.I work with him in the yard but his attention span in low to zero most of the time. Ya I know he's around 2 and at that age full of the dickens with attituds,behaviour glitches,etc. but this is a scarey pattern he's got.Trips to the vet mean he's sedated before,muzzled and he still fights contact(he doesn't like to be restrained)I'm by no means wimpy with him but he's really I'm ashamed to say out of control.He's gone through one hip surgery, has hd but is ok.. I don't want to pts but, once the house is sold I'm going to be renting(find an apartment that will accept 2 gsd's??)and once a landlord sees Kei in action they aren't going to rent to me. When he did bite my guest, I had introduced him to the person and Kei sniffed him, turned away then turned back and bit then repeated the same action but I grabbed him before he made contact. Maybe he didn't like the person but still it wasn't ok. His action was intense sniffing at the persons feet with tail wagging, no hackles or growling.I know he's testing for alpha with me so I am sure to correct each time but god, he's wearing me out!