Demon KISS (Scooby-Doo! and Kiss: rock and roll mystery)
Tublappa (Yo-kai Watch)
Lappinitup (Yo-kai Watch)
Akaname (Monster Girl Encyclopedia)
Mucus Toad (Monster Girl Encyclopedia)
Karakasa-Obake (Monster Girl Encyclopedia)
Jake Long (American Dragons Jake Long)
A Barnacles’ (Hλlf-Life series) tongue can reach impressively long distances, to snatch prey wandering too close.
Presumably used for obtaining knowledge and nutrients, a Combine Advisor’s (Hλlf-Life 2 series) tongue is not only prehensile, but its strong enough to impale their victims with them into the back of their necks and extract the said aquirements.
Lady Viper (The Wolverine)
Lickers (Resident Evil series) truly live up to their namesake.
Doc (Buffy the Vampire Slayer) attacks with his tongue.
Tambourine (Dragon Ball) uses his Lick Twister attack on Goku.
Yoshi (Super Mario) extends its tongue to grab things into its maw.