I noticed that your fur-babies do not wear collars. Is the park completely fenced in, my baby has to wear a collar. My baby, Sahara, would love to not have to wear a collar, but I have underground fencing. If I didn't have it Sahara would have been hit by a car by now, as she likes to chase every single car that goes by my house when she is outside. That girl can run, I am going to try to get her interested in lure coursing.