Biology

                                What Is Ovulation? Ovulation is the release of an egg from one of a woman's ovaries. After the egg is released, it travels down the fallopian tube, where fertilization by a sperm cell may occur.  Ovulation is the release of an egg from one of a woman's ovaries. After the egg is released, it travels down the fallopian tube, where fertilization by a sperm cell may occur.  Ovulation typically lasts one day and occurs in the middle of a woman's menstrual cycle, about two weeks before she expects to get her period. But the timing of the process varies for each woman, and it may even vary from month to month.  If a woman is hoping to become pregnant, she will want to keep track of when she may be ovulating. Knowing when a woman is ovulating each month is helpful because she is the most fertile — or able to become pregnant —around the time of ovulation....

                                 Cats Menstruation Cats are polyestrous, which means heat cycles happen periodically during their fertile years. 1 These cycles may start as early as four-months-old and will continue until a cat is either bred or spayed. Heat cycles in cats can last several days, up to two weeks, and repeat themselves every two to three weeks. Like most female mammals, cats go through physical cycles that prepare their bodies for fertilization and birth. In humans, this cycle is called "menstruation." In felines, it is called "estrus." When female cats are experiencing estrus they are said to be "in heat" and are hormonally receptive to both intercourse and reproduction. Cats can go into heat in late kittenhood, making it necessary to spay them if a pregnancy, and the responsibility of raising and finding good homes for kittens, is unwanted.  Female cats have period cyc...