Rarely do questions make us speechless.

“Is there any animal that naturally has no tongue?” Jeanette Thorpe asked Saturday’s Weird Animal Question of the Week via Facebook. (Check out Five of Nature’s Weirdest Tongues.)

There are, but this being Halloween, we’ll start with animals that have tongues…for dinner.

That’s not the weirdest part of the story.

All tongue biters enter the fish’s gills as males, but that can change. “The majority of tongue-biting isopods are protandrous hermaphrodites,” says Denham Parker of Rhodes University in South Africa, via email. They start out as male but are able to transform into females.

“If the host’s tongue is unoccupied, the male isopod moves from the gills and attaches to the tongue,” Parker says. Once attached,