My Brownie is about a 70 pound Yellow Labrador mix. When I'm out with him, I rarely see people with dog as large as him. He's not huge or large to me, but people always comment on how big or tall he is. I consider him a big dog because he's not a small dog. But to me truly large is a bit larger than him. American Bulldogs, Rottweilers, you know larger than him but not giant like Great Danes and Neapolitan Mastiffs. He's kind of tall, but far from big...
I agree. Brownie and I met a BIG boxer at the park. Though he was a littler overweight, the dog was bigger than the streamlined Boxers I was used to seeing a while back. The angle is bad, but that dog was taller than my pretty tall Brownie and he was only 9 months old! He also has huge splayed paws so you could tell he had a bit more growing to do. Boxers these days are getting HUGE!
Used to an Irish Wolfhound, to me a Labrador is a medium dog and I'm always suprised when people describe them as large or if they can't hold them back on a leash. GSD is a big dog to me, the same with Rottweiler, Doberman etc. Short dogs that are broad and heavy are also not "big" in my head, because they lack the height.