>>1360516Deer do occasionally attack people, and a few have been killed.
There have been fewer than 50 cases in all of recorded history of a black bear eating an adult that wasn't already dead, but will attack to protect cubs and occasionally when defending a high value food source (usually human trash).
With the right ammo a .44mag will kill anything on the continent, bigger is only better if you're not terrified of it (things like the .500 Linebaugh are monsters).
I carry and have used a regular .45acp as animal defense and it's been plenty for black bears.