He’s grown so much
How old would you say the dog on the right is? Or in other words, how much time do you think has passed between the time the two photos were taken? You can take a minute to think about this before reading the answer! On the photo on the left, this cute pooch is a newborn puppy, and on the photo on the right, he’s one year old!

That’s right, these two photos were only taken one year apart – and look how much this dog has grown! Generally speaking, dogs reach their full size by the time they’re one year old, but some larger breeds can keep on growing until they are two years old. So, there’s a good chance this dog has not even reached its full size!