These caps are most popular with kids who wear them while out and about. Every once in a while you can spot them on an adult, too. The sheer variety of styles is impressive. It seems you can find a cap of almost any animal. Above I see: a koala, cats, tigers, a panda, bears, and a husky. Not pictured are countless other animals. I've even seen an insectoid cap! 
And there are lots of cartoon character caps, too. Above are some Sanrio, Warner Bros. and Disney characters. I've seen a funny Santa Clause character cap as well. 
I wonder if the use of these characters is even legal? I don't know, but isn't this off-model Mickey Mouse something?
It's nice for a fashion trend to enliven the winter. Is this fashion popular in your part of the world, too?
