Some of the funny habits that they have are:
A) Sleeping anywhere and everywhere -
I'm not sure if cats are naturally tired all the time. But, they usually end up sleeping in locations that were not made for sleeping, like the sink or curtain rods or computer keyboards. Everyday they find a different spot to sleep and sometimes they even throw me off my own bed :D
B) Mewing -
I love the piercing roar that cats make when you’re holding them in your arm or cuddling with them or even when you open a tin of tuna fish, also the weird noises they make when they spot an insect or a cockroach and they are about to attack it... It's funny but oh so very cute.
C) Rolling over onto their back -
When a cat rolls over onto its back, it’s announcing to everyone in the general vicinity that its belly is open for business. While I’m tempted to think that the cats enjoy this magical power they possess, I wonder whether or not they actually appreciate the attention. Free belly rubs from humans are all that they want and for the human it also relaxes you.
D) Running around the house at full speed -
An adorable mystery that all the cat owners face. I find this the cutest thing, it gets me to play hide and seek with them and it brings a very happy feel to everyone that witnesses this. Initially I thought my cats ate a whole lotta catnip or have worms in their bum :D but all I guess it's just for fun and they want their human to join them too.