The fast and loose definition of an animal is a living multicellular creature which is capable of independent movement. The advantage of being multicellular is that different parts of the animal can...
well over time the land animals change a little and they need to be underwater to live unlike their land animal ancestors
A carnivore. carnivores eat meatthey are also called as "predators".
carnivore
Worms, fleas, ticks and other parasites