Add Yahoo as a preferred source to see more of our stories on Google. Have you ever heard of the 'cat mirror theory'? It's the idea that when cats see their reflections in a mirror that they don't ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. After five years of living, one might think cats have learned all they can, but a cat named Butters has shown he is still ...

A lot of us start our day by looking at ourselves in the mirror while we fix our hair or brush our teeth. It's so much of a typical, regular thing that we forget that this isn't a universal thing for ...

Have you ever heard of the 'cat mirror theory'? It's the idea that when cats see their reflections in a mirror that they don't recognize themselves and instead think they're looking at another cat.

Add Yahoo as a preferred source to see more of our stories on Google. A lot of us start our day by looking at ourselves in the mirror while we fix our hair or brush our teeth. It's so much of a ...