How do animal protect themself?

Answer 1

well its the same reason why you do it, why do you protect your self so that you don't get hurt, or maybe even get killed so they make these kinds of precautions. or maybe the animal is trying to protect its young

Answer 2

Animals protect themselves in many different ways, from an phsyical trait to a specific behavior that the animal portrays in dangerous situations. Your question was broad.