Our 3 year old Blue Merle Aussie is the largest we have ever seen. He is 91.5 lbs and not a bit overweight. His mother was in the 60lb range as was the father. He is a beautiful, intelligent and agile dog with all the traits of a great Aussie. He has one blue split eye. The breeder can't explain why this particular dog is so big.
He is 26 inches at the Whithers.
Does anyone have an Aussie in this size range? We've encountered one of his litter mates, who was a Red Merle, and he was in the mid 80lb range, still enormous by Aussie standards.