Welcome to the new old west! Don’t be alarmed, he is quite docile.
Popcorn is an undead horse belonging to the main character from the webcomic Zombie Ranch. This is a combination birthday and Christmas present for the lovely Dawn, the comic’s artist, and a Christmas present for Clint, the writer. I was rather startled to see they hadn’t gotten fanart of Popcorn yet! He’s so darned cool looking.
Enjoy the zombie horsie!