Cats spend around 30 to 50 percent of their day grooming themselves. This behavior serves several purposes: It helps cats tone down their scent so they can avoid predators, it cools them down, it promotes blood flow, and it distributes natural oils evenly around their coat, allowing them to stay warm and dry. Grooming also serves as a sign of affection between two cats, and it’s thought that saliva contains enzymes that serve as a natural antibiotic for wounds. Just because a cat is purring doesn’t mean the cat is happy. Cats often make the sound when they’re content, but they also purr when they’re sick, stressed, hurt, or giving birth. Scientists don’t quite know why cats purr, but one hypothesis is that the sound frequency of purring—between 25 and 150 Hertz—"can improve bone density and promote healing," theorizes Leslie A. Lyons, an assistant professor at the School of Veterinary Medicine at the University of California, Davis, in an article for Scientific American. "Because cats have adapted to conserve energy via long periods of rest and sleep, it is possible that purring is a low energy mechanism that stimulates muscles and bones without a lot of energy." Ever wonder why catnip lulls felines into a trance? The herb contains several chemical compounds, including one called nepetalactone, which a cat detects with receptors in its nose and mouth. The compounds trigger the typical odd behaviors you associate with the wacky kitty weed, including sniffing, head shaking, head rubbing, and rolling around on the ground. More than half of the world’s felines don’t respond to catnip. Scientists still don’t know quite why some kitties go crazy for the aromatic herb and others don’t, but they have figured out that catnip sensitivity is hereditary. If a kitten has one catnip-sensitive parent, there’s a one-in-two chance that it will also grow up to crave the plant. And if both parents react to 'nip, the odds increase to at least three in four. --- Support this podcast: https://anchor.fm/roger-keyserling/support
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