Braeburn's Interesting Past

So the other day, I was watching some old Donald Duck cartoons since we had these Chronological Donald Duck Volumes. Volume Four started out with the episode Dude Duck. As I watched, I noticed something oddly familiar about the main horse, Rover Boy... XD

Braeburn belongs to My Little Pony Friendship is Magic, Hasbro and Lauren Faust.
Rover Boy belongs to Disney.