Whatever it is...don't feed it!

Driving along Red Rock Canyon...we see a sign:

DO NOT FEED WILD HORSES AND BURROS $500 FINE

Me: What's a burro???

Hubby: What...there's wild horses???

And then a little while later...

Hubby: Look! Wild Horses.

Me: Ummmm no. But I think you solved my burro question.