Gilbert is a minor animal character only appearing in the episode "It Was a Dark and Stormy Night".
While Michelle is at Lakota summer camp with her friends, Steve, D.J. and Stephanie as her guide councilors, they take in a small rabbit who has broken his leg, Gilbert. They nurse him back to health, and Michelle is supposed to set him free into the forest before they leave to go home after summer camp, but she hides him in her gym bag and takes him home. When Danny finds Michelle with Gilbert in her bedroom and tells her that she can't keep him, Steve suggests to bring Gilbert back to Lakota, and D.J., Stephanie and Michelle come with him and when they arrive it is raining and Steve's car gets stuck in mud. Joey and Danny come to talk to the girls, and help Michelle let Gilbert go.