Male collies shed heavily twice a year, when the season changes. I brush them every day for one week. It is important to get all the loose fur off them then, or they will mat. The females shed heavily at least 6 times a year, if they are not spayed. A female who has been spayed will shed heavily twice a year, like a male. They do not shed much other than that, compared to other breeds. My brother had a jack russell who shed much more than my collies, but it was less noticeable because it was shorter fur. Even when a collie is in between it's heavy shedding times, called "blowing it's coat", it should be brushed to prevent it's coat from tangling and keep it clean.
Answered by Anonymous - 6/25/2013 9:11:14 PM