Stuff You Missed In History Class

Cat litter, it could be argued, kicked off the pet products industry. After its invention in the 1940s, other inventors started to come up with products that today are standard in the homes of people with pets. Research: Caminiti, Kasey. “Inside the Secret Lives of Pets With Allen Simon.” DuJour. https://dujour.com/life/allen-simon-founder-wee-wee-pad-pet-products/ “Clays.” U.S. Geological Survey. https://pubs.usgs.gov/periodicals/mcs2025/mcs2025-clays.pdf Crow, Frank. L. “Cat Tree.” Nov. 25, 1969. https://patentimages.storage.googleapis.com/65/fa/30/1290601d5476ab/US3479990.pdf Edward Lowe Foundation. https://edwardlowe.org/ Gross, Daniel A. “How Kitty Litter went from happy accident to $2 billion industry.” Washington Post. Feb. 2, 2015. https://www.washingtonpost.com/national/health-science/you-wont-believe-how-old-that-kitty-litter-is/2015/02/02/9ecac9ea-a1b4-11e4-903f-9f2faf7cd9fe_story.html Holding, Ray. “Cassopolis Man Valet for 10,000 Cats.”