Cat Snow knocks on window for his cat friend

Cat named Snow is knocking on the window for his best friend, Smog.
Most days, this handsome male cat comes to visit. Normally, he is a clever cat, letting her known he is there by tapping on the window. They go off on cat adventures together.
She is behind you!!

http://www.youtube.com/watch?v=ZrvpJ5iDivw

Cat Amma discovers snow for the first time