it's a creature, it can breathe.
A worm
Worm
The "animal" is the earthworm, an annelid worm. It helps to aerate the soil and decompose organic matter by digesting it.
the animal called the pebble worm (translated from Greek) is crocodile
The animal is the "host".
A herbivore
When an animal kills another animal, the animal that kills that animal is called the predator, while the eaten is called the prey. Let's use a bird and a worm for example, the bird is the predator because it eats the worm, and the worm is the prey because it gets eaten.
A worm.
A worm
the worm
caterpillar
A Worm