Will likes to roar. He likes lions and tigers and dinosaurs (dinosaur swim trunks), all of which roar, and his lion-blanket thing which he sleeps with is named "Roar". Sometimes we have roar contests, like the one in the video below, to determine who is the most ferocious lion in the house. Duke is the least ferocious.
We also sometimes have roar contests in stores just to let everyone around us know how ferocious we are. Mom doesn't like to participate in these contests very much.