Your comment made me think of cheetahs. An article once claimed that the biggest reason for cheetahs to perish in the wild was that at the speed they're running, even a minor mistake means they'll take a tendon-tearing or bone-breaking tumble, and their speed-optimized bodies are relatively fragile. Once they're injured, they are no longer fast, and thus lose their one and only predatory advantage.

Humans really are surprisingly strongly generalist, in ways many other animals are not.