Excuse me, what animal's skull is this? I found it on the beach.

Everyone else is wrong. First of all, this skull has no snout and no jaw. From the appearance, this is the skeleton of the cranial cavity, and the crescent-shaped parts protruding on both sides are the skeleton of the orbital part, which means that this is only the upper part of the whole skull. Fish can be ruled out according to the shape of the skull. Looking at the comparison between the size of the eye socket and the coin, we can see that this is an animal with big eyes, so it is preliminarily judged that this is a cat skull.