An animal (E.g. a shark, dolphin, or human) that naturally hunts and eats other animals.
A species is a group of life forms that are similar enough that they can create babies together that are also able to create babies. Wolves and dogs are from the same species, but dogs and cats are not.
A plan or way of acting that helps to get an end goal, i.e. a way of hunting that helps a predator to catch a fish