Buttercup came to Rainbow Meadows as one of the "Lucky 19+4." The "Lucky 19+4" included 19 horses, donkeys, miniature mules and miniature horses (four of which were pregnant) that were seized on March 13, 2008 along with llamas, dogs, sheep, goats, cats, cattle, turkeys, chickens and prairie dogs in one of Kansas's largest cases of animal cruelty. Upon seizure, the horses and donkeys were placed at Rainbow Meadows, where they received the necessary care to bring them back to health. After being granted ownership of the equids, Rainbow Meadows declared them as up for adoption and forever homes were found. Buttercup passed over Rainbow Bridge on July 2, 2010 after nearly two years with her adoptive family when she was lost to acute colic.