I just replied to the video link you gave. (I replied at Youtube) Made me cry - knew I shouldn't look. What a beautiful boy Tyson was! Let's see if the BC SPCA will try to sue me now, for what I wrote - the truth! They can't sue everybody!!!!!
I have a big black lab/rottie or lab/mastiff boy that we adopted. He was in and out of about five foster homes before we got him at the age of 10 mths. Had separation anxiety at one point before we got him, due to being crated day and night in the garage as a pup. Then he had various owners who gave him up, one couple were "having a baby", another woman "couldn't walk him" although she lived next door to a trail, another owner said he "chewed a whole in his gyprock". When we first got Boston he chewed a hole in our wall too, but my husband pointed to the wall and chastised him in a growly voice and Boston hung his head and felt bad. We gave him big marrow bones to chew on and lots of swims and walks, and no more chewing. Also, when we first got him, he stole a pork chop bone and my husband tried to get it out of his mouth and he nipped my husband. My husband showed Boston his hand, said "No, bad!" in a very growly voice, and put him outside on the deck for a while. Boston felt bad and every time Chris pointed to his hand, Boston hung his head. This dog is so gentle - loves all creatures animal and human, big and small. One day he would not come inside no matter how much my husband called him. So Chris went to investigate and found Boston standing guard over a fledgling bird that had fallen or been kicked out of its nest. This same dog used to sleep on his foster mum's bed with her foster kittens and was very gentle with them. At one point a lady took him in and it was decided he had to go to the pound because he was too unruly. (They kept him in the bathroom overnight.) Luckily, the pound was closed when they got there with him. I was told by a lady that met Boston before we knew him, that the pound would have tired drugs to calm him (he is high energy - but long off leash walks and swimming control that). Then if the drugs didn't work she said they would have killed him. Tyson reminds me of Boston in a way, with that big head.
So sorry, Tyson, that the SPCA failed yet another who did not deserve this sad ending. You deserved love and an owner to care for you, and you deserved rehabilitation which the SPCA did not do. SHAME ON THE BC SPCA!!!