What are Ocelots?
Ocelots are basically cats in Minecraft that are found in the Jungle Biome. They can be tamed and they run away when the player runs up or walks up to them, making them hard to tame. Once tamed, they can either turn into a Tabby, tuxedo, or siamese cat.
How to tame
Go up to an ocelot crouching with an uncooked fish. The ocelot will walk up to you (if you're close enough) and once they stop walking up to you, if they don't run, you can right click and basically keep clicking until they turn into some sort of cat. If they run away, wait 15 seconds and try again.