Hi
my maine coon boy who is nearly six months has a liking for one particular dressing gown that I have and does this!

It is a fluffy one and if I have it on he just dives on me and sucks away on it. I have just put it down to him feeling like he's back with his mum as it is very fluffy etc and when he sucks he also pads his paws like kittens do when they suckle off thier mum.

Have to say though I thought it was sweet at first but now when I end up with big wet patches does get a bit annoying so don't wear it much and he's quite happy with just cuddles!!! lol