Apple Bloom

Apple Bloom is Applejack's younger sister in My Little Pony: Friendship Is Magic. She and her friends Sweetie Belle and Scootaloo form the Cutie Mark Crusaders.

As Sis Rabbit in Kovu Hood
She is a rabbit.

As Olivia Flaversham in The Great Gecko Detective
She is a mouse.

As Teresa Brisby in The Secret of NIMH (Nuclearzeon Animal Style)
She is a mouse.