A full-grown dog's size depends on its breed. Obviously, a Labrador is going to be bigger than a Pug, so you'll want to have a rough idea about a dog's size prior to adopting. Dr. Greg Magnusson of Leo's Pet Care — a veterinary care clinic in Indiana — estimates that puppies will grow at different rates when they are different ages. Different breeds of puppies may grow at different rates, as well. Magnusson asserts that a dog's adult weight could be twice as much as his weight at 4 months of age.

How to Measure and Chart a Dog's Height

Before you can start keeping track of a dog's height, you need to know exactly how to measure him. A dog's height is measured at his withers, which is the spot on a dog that's equivalent to a human's shoulders (it's more or less where the dog's neck ends). From there, measure straight down to the floor in inches.

Making and Enjoying Fond Memories

Many parents have a long tradition of measuring their children as they grow by standing them in a doorway and carving a notch in the frame. Next to that mark, they write the child's height and age. As children grow into adults, fond memories arise from looking back on the markings recording those many years past. Measuring your dog's height — and reflecting on fond memories — isn't that much different.

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