Why do dogs pee on stuff? Evolutionary Question # 7
What does dog urine have in common with your wedding ring? More than you'd think! Signalling theory tells us that dogs have a lot going on during their morning walks.
Further Reading:
Here's a book about dogs marking their territory, it's where I learned about the research on golden jackals in the 1970s: https://www.elsevier.com/books/mammal...
Learn how signalling systems evolve: https://en.wikipedia.org/wiki/Signall...