These Pets all belong to the Mane Six.
Angel
Angel, or Angel Bunny, is a male rabbit and Fluttershy's pet. Angel is somewhat spoiled and bossy towards Fluttershy on occasion; however, he does care about her and actually displays an intention to help her stand up for herself. Most of Angel's actions are played simultaneously with instrumental jingles.
Gummy
Gummy is a small toothless green alligator who is kept as a pet by Pinkie Pie. He is docile, almost absurdly so, and is usually more peaceful and a little more distant, although he still tends to bite whatever happens to be near him, such as balloons or streamers.
Opalescence
Opalescence, or Opal for short, is Rarity's pet cat. She is irritable and often yowls and hisses at her owner Rarity and other ponies, but not at Fluttershy.
Owlowicious
Owlowiscious is an owl who is adopted by Twilight Sparkle as her pet. Owlowiscious is intelligent enough to understand and perform Twilight's various requests, such as retrieving specific books from bookshelves, though he only hoots and never speaks. However, Owlowiscious demonstrates some disdain or disapproval toward Spike's actions when he does something reprehensible.
Tank
Tank is a male tortoise who is Rainbow Dash's pet. He flies around with Rainbow Dash in his own personal helicopter pack. Every year, Rainbow Dash has to let him hibernate in winter down in Ponyville.
Winona
Winona is Applejack's pet and work dog. Unlike the Diamond Dogs, Winona only barks and does not speak in any of her appearances. She has a red collar with a golden name tag.