Juupiki no Kaeru
Type: OVA, Episodes: 4
Aired: Mar 13, 1998 to Mar 21, 1998
Studio: Toei Animation
Source: Picture book
Rating: G - All Ages
Synopsis:
Ten frogs set out in search of adventure in their swamp, sailing in a boat made from a running shoe. Based on the children's book by Hisako Madokoro and Michiko Nakagawa, the story of the frogs returned in a second episode, in which they went to a summer festival. Each episode has 2 stories in it.

(Source: The Anime Encyclopedia)