When I was a kid we caught woodchucks alive with snares and sold them to coon hunters. They doused them with coon scent and trained their dogs with them. Anyway, we had one real nasty, big old boar that wouldn't be taken alive. We discovered his front choppers were similar to your squirrel. We thought we were going to be millionaires!!! So we took him over to the local Vet and get an opinion on the value of this new species of sabre toothed woodchuck, ah the benefits of a small town back in the day. Sadly, he explained that what we had was a naturally occurring malady called a "malocclusion", not common, but not at all rare either. He went on to say we had done the poor creature a favor, in that eventually the tooth would penetrate the roof of the mouth and possibly the brain, if infection didn't get him first. Either way, a long suffering way to go. Cool picture, thanks for the memory!
Robby