All I can think of is the flipside of that, when people take in a stray dog that turns out to be a coyote. Some wild animal, in fine health, was kidnapped off the side of the big black stripe in the middle of its territory, and found itself in an angular white cave that smelled like too many flowers and had meat piled in a little metal bowl. Then a different biped arrived, yapped at its kidnapper for a while, and reverse-kidnapped it to roughly the same area it got nabbed in.

If it spoke English it would describe an alien abduction.