Long-tailed weasel. The long-tailed weasel (Mustela frenata), also known as the bridled weasel or big stoat, is a species of mustelid distributed from southern Canada throughout all the United States and Mexico, southward through all of Central America and into northern South America.
Hypomenorrhea or hypomenorrhoea, also known as short or scanty periods, is extremely light menstrual blood flow. It is the opposite of hypermenorrhea which is more properly called menorrhagia.
Menarche is the term used to indicate the onset of a girl's very first menstrual period. The female menstrual cycle is typically 28 days in length but can vary from 21 to 34 days in length and still be considered normal. Menstruation itself lasts a couple of days to a week.