The Siberian Tiger is the largest member of the 8 sub species of Tiger. The male can be almost 11 feet long and weigh over 600 pounds. The female can be over 9 feet and weigh 350 pounds. Most animals are smaller. In fact there are some who believe that the Siberian and Bengal are basically the same size. In any case the Siberian is considered the largest of Panthera Tigras Attricia. The gestation period for this animal is 3 to 3.5 months when normally 3 to 4 cubs are born. Litters up to 6 are not unknown. At birth the number of females to males is approximately the same. By the time they are mature (4 years) this has changed to about 3 females to every male. Females tend to stay with their mothers longer and stay closer to home, even after they leave their moms. Males have larger ranges and tend to get into more trouble. All of the photos in this gallery were taken at Animals of Montana near Bozeman. http://www.animalsofmontana.com