Diamond Dogs

The Diamond Dogs appear in the episode A Dog and Pony Show. They kidnap Rarity, and force her to find gems for them after they see her using her gem-finding spell. They aren't that bright and are tricked by Rarity.

Development
Lauren Faust stated that the names the Diamond Dog leaders were given in the script are Fido, Rover, and Spot. However, she didn't recall which ones have which name. Jayson Thiessen, the show's supervising director, later confirmed their names. Rover, the medium-sized dog, is the leader of the trio, while Fido is the large-sized one and Spot is the small, bulldog-like one. Rover is voiced by Scott McNeil, and Fido is voiced by Colin Murdock. The Diamond Dogs share their name with David Bowie's 1974 album.

Depiction in the series
The Diamond Dogs secretly watch Rarity and Spike collect gems, then make themselves known and tell Rarity they hunt for gems. They have a tussle with Rarity and Spike but manage to abduct Rarity into their extensive system of underground mines. The three main Diamond Dogs wear jackets and diamond-studded collars, while the rest of the Diamond Dogs wear metal armor and carry lances. They alternate between walking on their hind legs and all fours, their elongated forelegs giving them a gorilla-like appearance. They also have short and stubby spiked tails.