The Legend of Zelda: Ocarina of Time Glitches

Hyrule Dog Follows You In Daytime
You know those pack of dogs that come to Hyrule Castle each night when you're young? Well do you want to have one following you in the daytime? Go get a dog to follow you and then play the Sun Song.

If you get "little Richard" to follow you then go to the lady who you normally return the dog to at night and she will have her puppy next to her, meaning you have effectively cloned her dog.