Meet Knottie All about Knottie Knottie is a 1 year, 2 months old female Smooth Collie/Mix who weighs 23 pounds and has been with us for 304 days. Note that many dogs do not reach full size until they are about a year and a half old. The weight listed here is the dog's current weight. Photos (click for full-size) Additional Information Housetrained: Unknown or unspecified Has lived with animals: No Has lived with children: No × < >