Rinsi

Rinsi was a dog owned by UCKR.E.M. IV, a wealthy male businessbeing who sold portable planetariums. They both once attented one of Mrp-Mrp Poo's annual Vector Day party, although Rinsi's caretaker had not been invited.

Behind the scenes
Rinsi was mentioned in Monsters and Aliens from George Lucas, a book published in 1993. Lucasfilm employee Leland Chee, who maintains the Holocron continuity database, has indicated that information contained in the book is non-canonical.