How, in fact, do we count tigers?

A San Diego Zoo Safari Park senior registered veterinary technician, Kristin McCaffree, recently assisted during the medical examination of a platypus being cared for at the Taronga Zoo. 

Scientists at San Diego Zoo Global’s Frozen Zoo® have achieved a major milestone in saving wildlife species: This unique collection of genetic material now contains 10,000 individual cell lines from more than 1,100 species and subspecies—some of them critically endangered.