The female cat’s menstrual period is when she is in estrus, usually once every 2 to 3 weeks, and each time lasts for about 3 to 7 days. The male cat’s estrus generally follows the female cat’s estrus. Cats will bark, rub against people, like to be petted, urinate frequently, and have a small amount of transparent secretions from their genitals. Male cats will generally urinate randomly, pick up cats, and raise their tails.