shy has lived outside, loose for 2 years with never a problem. A ten year old beagle that doesn't ever do much of anything and sudenly she turns into seabiscuit out there! I was pritty aggrivated with her, but I still couldn't help but be suprised by her efferts. I may invest in a fence, but apparently nothing can keep Brownie in, or out. The little booger has lost two collers in two weeks! I don't know how he does it!