Incontinence in spayed females is fairly common. The problem is caused by a lack of estrogen, which, of course, was brought about by the spay surgery. Many people assume that when females are spayed, the veterinarian simply “ties the tubes,” that is, cuts and ties off the fallopian tubes so that the ovum can not travel from the ovaries, down the fallopian tubes, and become fertilized. Actually, the veterinarian removes the ovaries and usually, the uterus, too. The reason for this is that you not only want the female to become incapable of becoming pregnant, but also, you want her not to exhibit symptoms of heat.