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.

Internet users have been left in hysterics by a cat's fascination with a small mirror, despite his owner trying to use it to apply makeup. Cat owner Dana Fierce is accustomed to being closely followed ...

Does your pet ever check themselves out in the mirror? I remember the first time our puppy noticed herself in the mirror and couldn't quit staring at herself! Christypaw Persians sells adorable ...

A social media video of a cat 'checking himself out' in the mirror after having his coat groomed by his owner's mom has left the internet in hysterics. The viral video, which has been viewed by more ...

Inspired by a reader’s claim his cat possibly possesses theory of mind, I decided to test my own pet (Letters, 25 January). The experiment: I stand in front of a (full-length) mirror with Samson, a ...