Bogart has a humpy back, In fact, he has two humps, And these two humps are really just Two great big fatty lumps This picture book describes in rhyming verse fun facts about the Bactrian camel, a camel with two humps instead of the more common Dromedary camel that has only one hump. The author, Ritchey Marbury, took all pictures at Chehaw Wild Animal Park in Albany, Georgia. Bactrian camels have two humps. These humps are filled with fat- Not filled with water as some think. What do you think of that?