So, I have had my 3-year-old, 65-pound, American Bulldog for about 9 months. His name is Dewey and he is deaf. I recently adopted another dog, a 2-year-old, 45-pound, Australian shepherd/Chow mix, named Clint, from the local shelter. Dewey has clearly asserted himself as boss dog and Clint, being as submissive as he is, seems perfectly okay with the arrangement.
Clint and Dewey get along pretty well (I took Dewey to meet Clint before adopting) and they play pretty well, normal amounts of "bitey-face" and wrestling. My question concerns Dewey occasional behavior during downtime. Dewey, as the title of the post precludes, really enjoys chewing on Clint. Clint has rather long fur (compared to the short fur Dewey has) and Dewey enjoys gently chewing on this thick mane, as if Clint is a toy. Clint is totally fine with this (it seems).
Why might Dewey be doing this? I'm not looking to stop it because it seems both dogs are cool with it. A Google search hasn't yielded anything and I'm at a loss for explanation.