[mbrd]

O'Reilly-published books often have an animal on the cover. I don't think they are picked for relevance to the topic (even most of the Python books don't have pythons!)

https://www.oreilly.com/content/a-short-history-of-the-oreil...

[mtberatwork]

> even most of the Python books don't have pythons!

Well, that actually makes sense since Python derives its name from Monty Python and not the reptile.

[amouat]

There's usually some reference, but it can be a bit cryptic. All the Docker books have a whale.