To answer some more of your questions:
The mules are sterile. The males are called Johns and the females are called Mollys. The mollys do come into heat they just NORMALLY don't conceive. There have been a very few molly mules that have conceived and delivered foals. The johns should be gelded before 90 days old. I've heard that if you leave them longer, they can get mean. A john will still have "urges". I have 2 friends that have actually caught their johns in "the act".
My mini donk does tolerate my dogs. However, we brought a new dog in and he was out to get him. My mini mules also spend a lot of time chasing the dogs. The dogs do learn to get out quickly.
My jack loves the horses (especially the mares
) and tries to get along with the boys.
My Jack is the sweetest boy. He loves to have his cheeks scratched (front or back
) and LOVES attention. He is a clown. Always plays with rubber feed tubs, garden hoses, jolly ball. When we first got him, he would take pieces of the rubber feed tubs and place them on the mares back and just walk away.
They are great little animals and yes, they are addictive.