Platypus bear

A Platypus Bear is a large mammal found throughout the Earth Kingdom. It first appeared in "The Fortuneteller". They were also mentioned in "The Day of Black Sun, Part 2: The Eclipse", when Azula proved to Toph that she was a good liar by describing herself as a four hundred foot tall purple Platypus Bear with pink horns and silver wings.

Anatomy
The Platypus Bear's fur is mostly brown with a shallow white "V" on its chest and a patch of lighter brown around its eyes. The creature has a large bill lined with jagged teeth and a platypus like tail. Its front paws are padded with claws and it has large, webbed hind feet.

Connection
As its name implies, the Platypus Bear has direct  connections to real life animals, sharing many characteristics with both namesakes. Whether or not male Platypus Bears share the characteristic of poison barbs on their hind feet with real world platypuses is unknown.

Behavior
This animal is quite vicious, and has been known to attack humans. The Platypus Bear is capable of standing upright and also lays eggs, rather than giving birth to live young. A Platypus Bear can lay eggs rather quickly, especially when in fear. The Platypus Bear can also be trained and has been seen as both a circus animal and a brute enforcer.

Trivia

 * "Avatar Extras" stated that the Platypus Bear's favorite food is the Se Tu fish.