If you’re a dog mom or dad, you’ll know just how fast they grow. One moment, you’re tearing your hair out in the chaos of the puppy days, and the next, your fully mature four-legged friend takes up your car’s three back seats entirely.

Snapping plenty of photos of your puppy is an absolute must, as it means that when your dog is much older, you can look fondly back on the memories of those early days. Many people on the internet are sharing before and after photos of their dogs, as puppies and how they are now, and they make for pretty adorable viewing.

You can check out some of the best ones in this slideshow.