Mickey is one of the most good-natured souls ever, so he lets Stevie lie all over him.
One of the benefits of this is that Stevie then smells like corn chips. Most American pit bull type dogs smell like corn chips (for further stats on this, consult Ken Foster, world’s leading authority on the corn chip smell of pit bulls.) Stevie, being not that pit-bully and not at all American, doesn’t really smell like anything, not even like DOG. After reclining on Mickey, the odor of corn chips wafts off of him. He is still a rambunctious nuisance, but at least he smells good.