My coming up 5 month old puppy is huge and has been growing at what seems a crazy rate. My older dog of a similar cross is very tall but I don't remember him ever being this big and out of proportion at a young age. He has legs for days and big joints and feet. I have done a little reading and it seems that watching calorie intake is the way to go but i wanted some advice from personal experiences. He is light without being skinny and I plan on keeping him this way.