Did you know? Mass of an emergency spare tyre for a small car (11.7 kg) is 2 x Mass of an adult male Siamese Cat (5.9 kg)
Estimated world population of domestic Cats (600 million individuals)
/fact/estimated-world-population-of-domestic-cats
Link
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.