Possibly more information than any of us need

Tatiana, who was born in Denver on June 27, 2003, was brought to San Francisco as a companion for Tony, a 14-year-old Siberian tiger whose sibling and lifelong companion, Emily, died in late 2004 from cancer of the spleen. Although they were standoffish at first, Tony and Tatiana started having physical contact without barriers in February, graduating to bouts of torrid sex.

--from The San Francisco Chronicle