If it looks menacing, demon’s eye
Wyvern
The Wyvern is a highly sought-after massive flying dragon that can overpower most creatures it faces. The deadly Wyvern, which is only tamable by stealing and raising as a baby, can be found in four varieities — Fire, Ice, Lightning, and Poison — each of which have distinct attacks.

Name ideas for your Wyvern from ARK players.
Bahumat
Willow
Charogg
Fresh-breath
Charizard
Sheev
Petra (female)
If black toothless if green shenron
Fire: Smoke.
Dovah
Ice: Citrine (my late ice-Wyvern)
Poison: Wasabi
Ice dragon = Frost-Freeze-Snow-Cold-Tundra-Fleet-Glacial-Cryo-Flake-Frostbite-Crystal-Reflection
Fire: Dante and Diablo
If Lightning: Azymondias
Lightwing if lightning
Ignitus (Fire)
For a fire wyvern Smaug
For Lighting Wyvern: Electro Nugget