There are quite a few of us that own Heelers, Vinny, Baz, & I think Varmit to name a few. High energy for sure. I don't have cattle or any other critter that they heard. They do play well with each other very well. They do shed also. It's not an issue for me. I have a large fenced in back yard they play in. Play ball with them 2, 3, 4 times a day to tucker them out. Maxx is a very good watch dog, Colbi not so much. In one word to describe them.... AWESOME!!