An animal eats a child from a plate in a very fierce manner. This is a fierce animal, so it makes sense that it would eat the child in a fierce style.

The reason this fierce animal is eating the child from the plate is because the child forgot to mow (もう) the animal’s lawn. The fierce animal had hired the child to mow his lawn today, and when the child forgot to do it, the fierce animal hunted the child down and ate him.