Yes, a friend of mine had her spaniel mix, Mugsy, stolen and a cousin of mine had his chocolate lab stolen. And yes, we're probably 98% sure that the dogs were stolen/taken out of the yard by a stranger and didn't just escape on their own. Neither of the dogs were 100% "outside dogs". My friend's dog was outside w/ her other dogs while her mom made a quick trip to the store. When she came home, Mugsy was gone
My cousin's lab was playing with his girlfriend's dog in her backyard while my cousin and his gf ate lunch inside. When they went to check on the dogs - his lab was gone
They have both tried and tried to locate their dogs, but neither ever did

here's Mugsy: