This morning I went to the San Antonio Livestock Show/Rodeo and got to watch the sheepdog trials. I am now addicted to collies. Now I have another dog to consider for the future. I'm an outdoorsy person who likes dogs that are not aloof and yet not extreme velcro. A dog that want's to do something, but yet has (or can be trained to have ) an off switch. Which of the three would be good for me? I am planning on getting him/her from either a shelter/rescue or private rehome. I don't care if the dog is a mix or not, but he/she has to be under a year old (parents dog will not except anything he views as a "threat" and puppies/young dogs to him are harmless). I understand about the energy/drive and am planning on ways to work with that. I have acres that me and the dog can find things to do on. Understanding each dog is an individual, but which breed in general has: -Low incidence of DA/HA (I've heard bad things about ACDs) -Few health issues -Can live with other animals (cats, small pets)? I've never had a herding breed before. Brushing is not a problem.