You can watch the video of Wilma and the German Shepherd here.

Resources for readers and audiobook listeners:

1. A PDF file with all the endnotes and references in the book. This may be useful if you want to be able to click on links.

2. A PDF file with all of the figures from the book. This may be useful to those who listened to the audiobook and couldn't entirely picture Jon's descriptions of the graphs and figures. You may show these figures in lectures or reprint them in blog posts, with attribution.