> With the exception of insectivorous mammals, mammalian predators—unlike fish, reptiles, amphibians and invertebrates—generally prefer to kill their prey before eating it.

I'm not so sure about this one. Many carnivores like wolves eat their prey while it's still alive. When you are in a pack and are in competition with the other wolves for who gets to eat, your main priority is to get the prey into a state where it can't run away any more. Anything beyond that doesn't matter.