Yes. They have large, thick skulls. It’s a desirable trait of the dogfighting breeds. They are bred to be difficult to kill. The longer they live in the pits, and the more times they can fight, the more money they make and are worth.
“Didn’t know they were so hard to kill.”
Ever try to kill a possum?
“Didn’t know they were so hard to kill. “........
Just use a larger caliber gun, place your shot carefully and one shot will definitely do it.