We are lucky to have a large, fenced in back yard. I see mutual benefit here; our dog Willow always wants to play with other dogs, but she's an "only dog!" We take her to the dog park frequently and have our friends bring their dogs over. She's friendly with all dogs except tiny ones (she's not quite sure about those yippy chihuahuas). She got bit by a pit/boxer once, so please no aggressive breeds. My dog, Willow, is a sweet 1 year old 79 lbs. white lab and shepard mix. I can watch a max of 2 dogs at a time (3 total with my own dog). We have one older cat, so your dog MUST be cat friendly! (Cat has her own place to hide and chill).