 In 2001, Bubba developed an unusual growth on his forehead, which was eventually diagnosed to be malignant; the aquarium called in veterinarians to remove the growth surgically and treat Bubba with chemotherapy that year, and again in 2003, when it regrew.Shedd officials stated that Bubba was popular with cancer survivors, especially children, and was a favorite of visitors.The oncology department of Hope Children's Hospital in Oak Lawn, Illinois, recognized Bubba with a tile in the ward.