I am wondering if my pure bred sheltie, Prince Laddie, is one of the largest ever recorded. He weighs 67 pounds, not overweight very slender, and stands from shoulders down a whopping 24 inches. His sister and parents are all around 18 to 22 lbs. He is just over 4 years old and beautiful. The only health issue he has is his eyes are not producing tears very much and we have to use drops everyday.