The rut drives deer, elk, and moose to extreme behaviors, as you’ll see in this aggressive fight between two mule deer bucks.

Breeders of deer have long known that they cannot keep two bucks in the same enclosure during the rut, because dominance instincts are so strong that one will kill the other. Normally, deer antlers are benign, yet in a power quest for dominance, they become piercing daggers that can puncture a lung or another organ, leading to death. This is nature in its brutal reality.

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