We have a 9mo old saint bernard named Casey. He is just over 100lbs at this point. We were hoping he would be bigger, but are satisfied with a slow and steady, healthier growth. He eats up to two bowls of food each night. His dad is 220lbs. With your experience, what is a normal weight at different ages? Or do you remember how much your dogs weighed at certain ages? Also, where can we find a leash that will hold up to 200lbs or more?