Cats

Cats were small, four-legged animals that lived in Arda. They were often used as companions and pets by the Hobbits and Bree-folk. As they were keen-sighted and agile, some cats were used for hunting and spying.
== Cats of Berúthiel ==
During the Third Age, Queen Berúthiel of Gondor kept nine black cats and one white cat. The black cats spied on the Men of Gondor, but failed to hide the fact that they were spying. On the other hand, the white cat was ordered to spy on the black cats and did a better work than them, as the black cats never found out that they were being watched. When Berúthiel was exiled from Gondor, her black cats accompanied her.
== "Prince of Cats" ==
In earlier concepts in the legendarium, Tevildo was the Prince of Cats and the demonic servant of Melko. He took the form of a great black cat with a collar of gold. His character eventually became Sauron. He is treated as a separate character from Sauron in Beren and Lúthien.