A Siberian tiger cub named T.J., born at the Denver Zoo, is orphaned when he is only a few weeks old. The veterinary staff raises him, feeding him by hand until he is able to eat on his own and return to the tiger exhibit. The story is accompanied by four different types of graphs (picture, circle, bar, and line) that display information about the numbers and types of tigers in the wild, how much T.J. is eating, and his weight compared with other tigers. This is a good introduction to how charts and graphs are used in the real world.