House cats can run 30 mph, which is enough to win a race with the world's fastest human Usain Bolt, who has a top speed of 27.8 mph. Ancient Egyptians loved both cats and dogs. The Saluki is a dog breed found in Egyptian tombs dating back to 2100 B.C. Abraham Lincoln loved cats. He kept four at the White House, and his wife Mary Todd described caring for cats as his favorite hobby. You refer to a group of porcupines as "a prickle of porcupines." There are roughly 1.5 billion bugs for every one person on the planet! They're more essential to most of our ecosystems than humans. Genome analysis of current dog breeds revealed that the Basenji is the world's oldest breed, having existed alongside early humans on the African continent.