From what I've seen, they effectively have claws on their tongue.
(
FeralCatMan Unusual disease collector., Wed 25 Aug 2021, 21:55,
Reply)
They're freaky.
The spikes are sort of hollow to allow for better stickiness and drinking of fluids. I remember someone saying it was like a 3/4 cross section of a straw.
(
Invisible Wizard - 10th Level Nerf-herder, Wed 25 Aug 2021, 22:18,
Reply)
Again, very similar to claws.
(
FeralCatMan Unusual disease collector., Wed 25 Aug 2021, 23:49,
Reply)