sea stars mainly, and some other sea creatures that eat away at the coral reef
Redwolves hear a preaditor comming and run away, that's 1 way thay use stimulus
=Penguins don't sleep they nap. Even at night they nap because they don't fall in a true deep sleep. They also sleep close by because if a unexpected preaditor comes their less likely to be eaten.=
Adult Stegosaurus were hunted by Allosaurus, Epanterias, Saurophaganax, Torvosaurus, and Ceratosaurus. Young Stegosaurus were protected by their parents, but if they wandered off they would be vulnerable to attack by any carnivorous dinosaur, even the small Ornitholestes.