the digging
Cotton does that. I would be lying on the couch and here comes cotton to dig smooth and nibble my shirts. HE would jump off and repeat over n over for a while. I think he was just enjoying himself. He doesn’t do that as much since Ruby came to be with him.
when I lie on the floor with him he will come and dig on me then nibble and smooth my shirt back out. It is so funny. Maybe that is his way of grooming me ? I dont’ know for sure but playing sounds about right.
Now when I pick him up and hold him he will dig at me too. IN that context it means hey I dont’ like this put me down. Also when I take him outside and put him down he will jump back in my arms and dig at me. Now that means how dare you put me down. 
Gosh seems like everytime I post something it starts with …..Cotton does … or Cotton this or Cotton that hehe.
Hey maybe Cotton is just the all around bun who does everything other buns do except keep us up at nite. 