Howdy!!! I've got two Australian Kelpies from the same litter and at 8 weeks they were still munchkins. At present, they're (male) both two years old and weigh about 54 pounds, mind they didn't start filling-out until they were about 18 months. They're truly amazing working cattle and goats but can be very independent, if not downright stubborn at times!!! Mine are the cream colored Kelpies.