Sumatran Tiger Twins Unwrap Tasty Treats for Ninth Birthday

Sumatran tiger siblings Cinta and Jalur celebrated reaching middle-age on June 12 by unwrapping cake-shaped meat treats for their ninth birthday.

The siblings are two of the few hundred Sumatran tigers alive today and are part of a critically endangered species. Their average lifespan is about 15 to 25 years, but they can reach 25 years in captivity.