During the second stage of puppy development little fido will grow very quickly and will mature at the same pace he will start to regulate his own temperature during this period and also start to feel the urge to pee poop all by himself so he wont need his momma or you to stimulate him to eliminate any more. From puppy to dog how do they grow library binding september 1 2001 by jillian powell author visit amazons jillian powell page find all the books read about the author and more see search results for this author are you an author learn about author central jillian . As your dog grows from puppy to senior youll need to adjust how you take care of them heres what to expect as they move through six stages of life puppies and how to take care of them life stage no 1 puppy your dog is a puppy from the time its a newborn until its able to reproduce this happens at different ages depending on the breed of your dog small breeds tend to reach sexual . So the answer to the question at what age do dogs stop growing varies from dog to dog puppy growth chart the puppy growth chart below will give you an idea of what i mean the squares that are left blank indicate that the dog has stopped growing by that point at what age are dogs full grown check out the way that breed size has an influence the chart above will also give you an idea of