These questions are about the animals and beasts that have appeared on the show. Answers are under the spoiler tag.

What is the name of the creature found in the dimension that Treehugger was going to be sent to?

Senior Huevos

Which of the creatures that have been shown to feed from emotion originated in North America?

Windigoes

Which mythical creature was Fluttershy seen feeding in Filli Vanili?

A jackalope

Which character shares a similar design with Grogar from generation one of MLP?

Arimaspi

Which mythical creature shares similarities with the changelings' feeding habits?

Succubi

Which creature in the show has wings added to it's original look in mythology?

Manticore

What is the name of the Sea Serpent that appeared in the show's pilot?

Steven Magnet

What Mayan creature, other than Ahuizotl, is mentioned in Daring Don't?

Quetzalcoatl. The Quetzalcoatl Empress is said to be a practitioner in dark magic.

What creature appears in an episode with a tail over four times the size of its body?

A dragon in dragon quest.

Which four creatures that have appeared are all children of Echidna?

Hydra, Chimera, Orthrus and Cerberus.

Which two species have appeared only in groups of three?

Windigoes and Sirens

Which group of creatures most resemble kelpies?

The sirens. Kelpies possess a horse body, but with only front legs and a fish like tail downward.

True or False: The Cockatrice in the Stare Master is actually a basilisk.

False. Cockatrices possess rooster heads with snake bodies. Basilisks are full on snake creatures.

From what mythology does the creature that Fluttershy and Rainbow traded for in Trade Ya come for? That was a mouthful.

Greek. The Othrus was brother of Cerburus.

Which species is shown to both be farm animals and sapient creatures?

Cows.

How many heads did the first hydra have?

Nine.

What species are Tirek and Scorpan generally accepted as?

Centaur and gargoyle, respectively.

Which creature was known for its victims never being heard from again?

The headless horse.

What creatures have been the only ones to sing songs?

Draconequus, Changelings and Sirens.

What culture does Arimapsi come from?

Persian.

What was the very first mythical creature to appear in the show? Ponies don't count.

Dragons, in the form of Spike.

Which paw did the manticore have a thorn in?

Front left.

Which creature was originally a bogeyman-like being?

The bugbear.