That is what is so fascinating about a cat is the shape of their pupils. There are on rare occassions that some will have rounded but in general, they almost look like slits in the eye. Quite cool looking if you ask me. Alsmost lizzard like. This will vary on the breed. You can always google to get more information, or go to a simple search engine, but "ask Jeeves" is for more general information, like a simple question to a simple answer, etc.
No That Is Dogs
We have two cats one has slits with their pupils, and the others is always perfectly round although the circles are sometimes big and some times small