My male kitten , Soca (3 months), does this really weird thing. He will go into his sleeping pad, purr profusely, and suck on the material in the bed (as if on a nipple). His paws are spread out and doing this 'grabbing' motion. Im sorry i cant be more discriptive. Its so weird that I cant even properly describe it. Does anyone have a clue as to what im talking about?