Saved by a Hare
The gang runs into Hare at an orchard and finds out that he has been living with Tama who saved Hare after the battle with Moo. Seeing that they are on such good terms, the gang cannot bear to break them apart. Leaving Hare behind, the run into Zerbasaurians that are sent by General Durahan. With Holly held hostage; Hare comes at the nick of time to save the day. In the end, Tama makes a tough decision to let Hare go.
Aired 29/04/2000EP 4 - Saved by a Hare

Monster Rancher (2000)
Genki is a boy who loves playing video games. One day he's zapped into the world of Monster Rancher and meets the girl Holly and the monsters Mochi, Suezo, Golem, Tiger and Hare.
Continuing from where the original story left off, Genki and friends journey to conquer the legend cup in hopes of freeing Holly's father from the mystery disc.
(Source: AniDB)