Donkeys as a herd or flock guards are fairly common in my area. Along with being incredibly picturesque they are diligent in keeping an eye on who is driving up and what they might be selling. I was all set to catch some sheep doing, you know, sheep things when the three amigos here decided it was time to visit another field.
Here is a link to a little guy I know personally showing off- Buddy, my folks miniature donkey, doing his thang. -Cheryl captured this just the other day. Go Buddy GO! Guarding the home place.