Cats purr not only when they're happy, but also when they're stressed, injured, or in pain as a form of self-soothing. elaborate
FeLV is spread through saliva, not just bites, meaning cats can transmit the virus through grooming or sharing food/water bowls. elaborate
Kittens need to eat multiple small meals a day, rather than just a couple of large ones, because their stomachs are so small. elaborate
Cats are prone to periodontal disease, and gingivitis can develop in just a few weeks without proper dental care. elaborate
The first commercial cat litter was made from sand. elaborate