I would most certainly risk injury to myself to save a pet or prevent injury to the pet. I think the biggest reason for this is not that I value my life less, it's because if I get injured, I can understand why and what's happening because of my actions. Animals don't understand. This is one of the reasons Terry is such a wimp about animals. He just feels so bad for them because they don't understand what is happening to them. You can't sit down and tell a cat "Ok, kitty, you've broken your leg so now you need to wear a splint for a couple of weeks and then you'll be good as new." All they know is when they walk it hurts, and when you put the splint on they can walk but they've got this goofy uncomfortable thing on their leg, which they then try to remove.

I don't know if this totally explains what I mean, or explains it well enough, but hopefully you get the idea.