Predator and prey

A predator hunts and eats other animals, its prey. The two numbers rise and fall together with a delay: when prey is plentiful, predators raise more young and grow in number; then they eat so many that prey becomes scarce, and the hungry predators fall in turn, letting the prey recover. Records of Canadian hares and lynxes kept for nearly a century show this cycle. Prey animals have ways to avoid being eaten: camouflage, eye-like spots that scare, and bright warning colours on animals that taste bad.