What it often means
- Leftovers to cover: he has eaten his fill and covers the rest, probably an old reflex that avoids leaving the smell of a meal lying around.
- A portion that is too big: a 2006 review points out that the cat, a strict carnivore, is built for many small meals. A full bowl leaves leftovers.
- A smell that bothers him: dried-out wet food, a new food, a poorly rinsed bowl. He covers what he dislikes, the way he would in his litter box.
- A way of eating: some cats scoop kibble out with a paw to eat it off the floor, especially when the bowl is deep or narrow.