The Perishers dog, Boot. In the early days of the strip they lived in an approximately 10-foot (3 m) diameter concrete pipe section in a seemingly abandoned builder's yard. In 1966 he and Boot moved into a small railway station that had been closed by the Beeching Axe, and they have lived there ever since. Wellington takes his nickname from his trademark wellington boots – he cannot afford proper shoes. He named his dog Boot to go with Wellington. Wellington is quite an intellectual and given to philosophical trains of thought. He can also be quite resourceful – he appears to support
The Cartoon History of the Universe each published collection, Gonick thoroughly cites his sources. But rather than relying upon an ordinary, typeset bibliography, Gonick sustains his unorthodox style and exuberant tone as the Professor takes the reader through a cartoon tour of his sources. Because much of "The Cartoon History" covers evolutionary science, physics, astronomy, and ancient history, Gonick has referenced original writings on these subjects, rather than relying on secondary sources or anthologies. Some of these primary sources are national epics, cultural writings, or holy scriptures, such as Homer's Iliad, the Rig Veda of India, and the Bible. In this way he prompts his readers