While I absoulutely love dogs, I have to agree with the comments about dogs getting loose and causing havoc with wildlife. Where we hunt for deer and turkeys near where we live, there are many homes surrounding the ranches we hunt. These ranches range from 1,000 acres to about 4,000 acres. The rancher, against my better judgement, told me that he expected me to shoot every dog we saw when he had cattle on the ground. After seeing the damage that dogs did to a few of his cows, I became a believer. One time, my partner shot three dogs, a shepard, a rottweiler and doberman, that had a heifer cornered where two fences came together and they were mauling her. He killed all three dogs with his shotgun. The rancher had to put the heifer down later. Once while running traps for coyotes and bobcats, I had a doe deer run past me and less about 15 seconds later, here came a very winded german shepard. A few quick shots with my .22 and the doggie wasn't chasing anymore deer. The house the dog belonged to was one I drove past every day going to check my trapline, and I saw that dog running free often. Another time, the rancher shot two free running dogs within sight of their owner's home, since they were chasing his cows. He went and hung the carcasses on the fence, didn't have any dog problems for a while after that, either.
Dogs are great and wonderful companions, but the ones who're left to run free become little troublemakers, all too often.
Gotta love their loyalty.
