Digestive System: Bengal tigers have digestive systems just like most mammals. Food is chewed in the mouth and swallowed down the esophagus, into the stomach and through the intestinal tract, and the waste goes out the anus. Bengals really like to prey on deer-like species of animals. They are also known for eating elephant calves.
Reproductive System: Unlike other animals in the world, bengal tigers don't have a specific mating season. They do, however, prefer to mate in the warmer months like March and April. After conception, it only takes about 16 weeks for the cubs to be born. There usually 3 cubs per birth.
Respiratory/Circulatory System: Like most mammals in the world, this tiger has a cardiovascular system. That means that blood is pumped by the heart throughout the body. The blood is oxygenated by the air that the tiger breathes in through the nose or mouth. The air goes into the lungs and carbon dioxide is exhaled out of the lungs.
Nervous System: The bengal tiger's nervous system is not unlike most mammals. They're central nervous system contains a brain, vertebrae and spinal cord. The vertebrae protects the spinal cord and is vital to the tiger's survival.
Skeletal/Muscular System: The bengal tiger's bones are very strong in their own right. Like other mammals' bones, the tiger's bones protect the internal organs. The muscles on the other hand, are very strong some places. The jaw and leg muscles are the strongest muscles in the tiger's body.