Beautiful rottie you have there
Lets see, my largest is Rosie, the GSD in my avator. She is 10 months old, about 80 pounds (possibly a little more) and is about 26.5 at the withers, so she's a big puppy.
Trina is an akita/gsd mix, I honestly have no idea how much she weighs at the moment. The last time she was weighed, she was overweight at 100 but I've trimmed her down since then, so hopefully around 90. She's about 24 at the shoulder.
And Angie is a whippet/miniature pinscher mix. She weighs 18 pounds and is 15 inches at the withers.