For those who poo-pooed the autopsys of animals, they do represent living tissue, which ballistic gelatin, pine boards, Duxseal and other media do not.
The bullet's relative performance on living animals, large or small, is a good representation of the bullet's effect on human beings. Remember in testing the .45 ACP the Army used live goats for tests.
But a bullet that does not expand on a small critter, won't expand in the human body. And a bullet that expands too soon in an animal, will likely expand too soon on the human torso.
Common sense must dictate any observation.