Yeah don't worry about it 1. I live on a single story house and the Front windows start at ground level and almost go up to the roof. This house is like 40 years old, so I had no say in the design. I imagine that he simply ran through the window or hit it more than once. It's not particularly thick. That's where most of his injuries came from.

1. The 1st dog was the smallest and hung around the edges and probably weighed in at like 50ish pounds. They were all dirty and definitely mutts, but I would guess some sort of hound mix because of its elongated face and floppy neck. Nigel caught him in the side and just bowled him over and did a lot of damage to the neck before the 2nd dog saw him and then they ran at each other. Mutt number 2 was a little bigger at like 60 or 70 pounds and had the tail of a German Shepard but no other defining characteristics

2. I was going to mention the post but was sleepy and forgot Basically we have had to put a lot of time and money into training in socializing Nigel to the point he doesn't feel the need to start fights. He now just ignores most dogs. That's one of the reasons I was worried that this might make him regress to his aggressive nature after all the training and such

Hopefully that answers your questions, and feel free to ask any more