Naughty cat trying to be sneaky!

I have here my very first video (right at the bottom) of naughty cat trying to be funny. It was trying to disturb the one that was sleeping away. But it just didn't want to give up. It sniffing and licking the other's tail and finally decided to give it a little bite! It simply ignored me so I took my time to observe and capture it on my mobile. Hahahaha....it's so funny!