They may be big dogs now, but they had to start somewhere! Check out some of the most amazing dog size transformations in the slideshow below.

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Great Dane Puppy
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Great Dane Adult
But now that it's all grown up, it would probably hug us instead! Not that we're complaining. via YouTube -
Giant George Puppy
"Giant George" the Great Dane wasn't always so giant. via YouTube -
Giant George Adult
Now, it's obvious where he got his nickname from—and why he is Internet famous. via YouTube -
Australian Shepherd Puppy
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Australian Shepherd Adult
Now, there's no way he could possibly sit on that holly like he did before! via YouTube -
St. Bernard Puppy
This St. Bernard puppy is so tiny, it can practically fit in its owner's hand. via YouTube -
St. Bernard Adult
It's not fitting in anyone's hand now! via YouTube -
Great Dane Puppy
In this super-inspirational story, this owner was told his rescue pup did not have long to live. via YouTube -
Great Dane Adult
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Tiny Terrier
One wife told her husband she got a Jack Russell terrier puppy when she actually got a Great Dane. via Facebook -
Great Dane
As you can imagine, the little fib grew pretty big! via DailyMail.co.ul -
German Shepherd Adult
And the last slide is him at 8 months. They certainly can't cradle him like a baby anymore! via YouTube -
German Shepherd Puppy
This German shepherd's growth was also tracked by its owners, starting with cradling status. via YouTube -
Newfoundland Puppy
This Newfoundland puppy is definitely squeal-worthy. via YouTube -
Newfoundland Adult
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German Shepherd Puppy
This YouTube user tracked his German shepherd's growth, starting from when he was just a puppy. via YouTube -
German Shepherd Adult
Sniff, sniff, they sure do grow up fast—in a matter of months. via YouTube