A Siberian tiger at the Minnesota Zoological Garden. The Minnesota Zoo has a su itable climate for tigers. The zoo also coordinates the Siberian tiger breedin g program of the American Association of Zoological Parks and Aquariums Tiger S pecies Survival Plan. The zoo has made headlines around the country for its invitro f ertilization work with tigers coordinated with the Henry Doorly Zoo in Omaha an d the National Zoo. The statistics show that presently there are 2 times as ma ny Siberian tigers in captivity as in the wild. Copyright: National Geographic / Michael Nichols