Poison-Toxic Waste
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.
Siri
Ssiri
Tiddles
Griffin Ender
Drakonic
Dragonite
Lighting, (shock,burst)fire,(smaug,scorch,blaze)poison,(toxin,belch,spitzo)
For Ice: Black Ice
For Fire Wyvern: Ember
If female fire call it ember
Dragon deez
Infernos if its a fire wyvern
Z fire: Scorpion, Onyxia, Hellraider
If fire: Hookfang (From HTTYD)
Ice: Icee, Snowy, Snow Cone
Fire: Spicy Chicken Sandwich
Poison: Argonia, Jade, Freya, Virus
Clay or Tina
Crack head lizard