Happened to me a few times too, showed a dog bayed, got within 50 yds, couldnt here anything. Thinkin they might be caught we are running trying to get to him, then all of a sudden poof, he shows .97 mi away.

Thats one reason mine dont get cut loose without radio collars too. But most of the time i leave it in the truck, and just use it as a back up.