My little boy Cosmo does the same thing! In my opinion, I think that's his way of saying "I like you human so I gives you lickies!". We pet them and stroke their little heads gently, so maybe they figure they need to show us some kind of lovins too by grooming us? Or maybe it's just their way of tasting us and getting more familiar through smell, touch, and taste. Either way it is as cute as can be and makes me smile! #128513;