Females are 18-21 inches at the withers and weigh anywhere from 27-42 pounds.

The border collie is a beautiful medium sized breed that is prized for his keen intelligence and herding abilities. Males stand 19-22 inches at the shoulders and weigh between 30 – 45 pounds. Females are 18-21 inches at the withers and weigh anywhere from 27-42 pounds. Border collies have a longish body and a relatively wide skull with a pronounced stop. Their ears are typically half-perked, oval eyes are usually brown but may also be a pale shade of blue and they have a muzzle that tapers to a black nose. These dogs are available in two coat varieties. One features courser and longer hair (3 inches), while the other has short sleek hair (1 inch). The colors of the coats include black and white, red and white, black and gray, tri-colored and all black. The average border Collie lives between 12-15 years and is relatively easy to take care of and is an average shedder.

URL:

https://bordercolliesavvy.com/border-collie-breed-information-and-characteristics/