Brookfield Zoo

In what is a stellar example of animal care, a 2,300-pound (approximately 1,043 kgs) eastern black rhinoceros underwent a CT scan at the Brookfield Zoo in Chicago. Seven-and-a-half-year-old Layla is believed to be the first of her species to undergo such a procedure.

She is a mother of three, grandmother of 16, great-grandmother of 12 and great-great-grandmother of three. She recently had surgery to remove a malignant tumor, but doctors say she's doing well.

In what is a stellar example of animal care, a 2,300-pound (approximately 1,043 kgs) eastern black rhinoceros underwent a CT scan at the Brookfield Zoo in Chicago. Seven-and-a-half-year-old Layla is believed to be the first of her species to undergo such a procedure.

She is a mother of three, grandmother of 16, great-grandmother of 12 and great-great-grandmother of three. She recently had surgery to remove a malignant tumor, but doctors say she's doing well.