Elephant rat

Elephant rats  are small rodents that possess a trunk similar to that of an elephant and the body and size of a rat. They are usually seen searching for food in old, run-down areas, such as prisons.

History
Elephant rats have been seen in Chin Village, located in the Earth Kingdom, as well as in the Fire Nation. Aang saw one scampering around the Chin Village jail when he was imprisoned for Avatar Kyoshi's murder of Chin the Conqueror.

Hama employed elephant rats in her development and practice of Bloodbending during her imprisonment in a Fire Nation prison.

Anatomy
This creature has the body, size, and head of a rat and the trunk of an elephant. It is covered in black fur, except for its relatively long pink tail and the inside of its triangular pink ears, and its eyes have vaguely parallelogram-shaped white markings about them. Otherwise, it seems to have the same proportions as the common rat.

Connection
Elephant rats are a hybrid of two animals, being part elephant and part rat. They also bear resemblance to elephant shrews.

Trivia

 * The combining of an elephant and a rat to create this animal can be seen as an oxymoron because of the myth that elephants are afraid of mice.