Tiger Keyring. The tiger is a stripy mammal - the largest and the most powerful of the four big cats. Reaching up to 4 metres in total length and weighing up to 300 kilograms. Highly adaptable, tigers range from the Siberia to open grasslands, to tropical swamps. In a poll conducted by Animal Planet, the Tiger was voted the world's favourite animal, narrowly beating man's best friend, the dog. The tiger received 21 percent of the vote, the dog 20, the dolphin 13, the horse 10, the lion 9, the snake 8, followed by the elephant, the chimpanzee, the orangutan and the whale.