The largest cat species in the world is the tiger. They reach, on average, 11 feet from head to tail and can weigh up to 675 pounds.
There are seven recognized subspecies of tigers: Bengal, Indochinese, Malayan, Siberian, South Chinese and Sumatran.Of these subspecies, the Siberian tiger is the largest. Compared with the smallest subspecies, the Sumatran tiger, the Siberian tiger is the same length but two to three times heavier.
Although it is not a viable species, the hybrid of a male lion and female tigress, known as a liger, is often larger than even the Siberian tiger. Often weighing up to 1,000 pounds, these animals are typically sterile and thus not considered an actual species as they cannot usually breed and produce offspring.