Cat Ears

This tool was given to Naruto, Sasuke and Sakura to sneak into Nekomata's castle of cats. This tool allows the user to interact with other cats as if they were cats. If it were to fall of a cat would be able to distinguish the person from other cats.

Trivia
Once Naruto was distinguished from the others Sasuke and Sakura passed by the other cats with ease, but even with the Cat Ears Nekomata was still able to tell that he wasn't a cat.