The animal on the cover of Data Wrangling with Python is a blue-lipped tree lizard (Plica umbra). Members of the Plica genus are of moderate size and, though they belong to a family commonly known as neotropical ground lizards, live mainly in trees in South America and the Caribbean. Blue-lipped tree lizards predominantly consume ants and are the only species in their genus not characterized by bunches of spines on the neck.
Many of the animals on O’Reilly covers are endangered; all of them are important to the world. To learn more about how you can help, go to animals.oreilly.com.
The cover image is from Lydekker’s Natural History. The cover fonts are URW Typewriter and Guardian Sans. The text font is Adobe Minion Pro; the heading font is Adobe Myriad Condensed; and the code font is Dalton Maag’s Ubuntu Mono.