My cat Maisie has been letting me pet her more recently and I discovered today that she seems to love having the base of her tail scratched. She licks the air or herself. I know this is a common reaction for cats, but I haven't found a definitive answer online as to why she does this. I've seen some answers that cats who are overweight do it, so it has me thinking maybe Maisie needs to lose some weight. She's not obese, she's a little overweight, but I wouldn't say it's restricting her in any way. Does anyone know of the reasons cats do that?