I live on the detroit river and am an avid fisher, the snapping turtles I have seen were HUGE! They were almost pre-historic looking, with algae growing on them, and zebra mussels, like something out of the swamp thing, but very cool....The thing is, if mud puppy larvae and adults could survive where the turtles live, why couldn't a water dog or tiger salamander?? Also, I think the climate is to cold, our winters are extremely harsh for land salamanders, wouldn't you think? I have never seen a tiger around where I live, and the species range is more western than ontario. I read they are in Manitoba and Saskatchewan.