I got Reggie (German Shepherd male) at 11 weeks, and he weighed about 28 lbs. At 18 weeks, (4 1/2 months) he now weighs 56 lbs. His feet, head, and ears are larger in proportion than his body, so I'm sure he will get very large like his daddy. His dad is 130 lbs, and momma is 90. They grow very quickly!!
He is learning fast. I put him in a training class, and after the 3 beginners class he was bumped up to intermediate classes. I guess I have a baby genius :o)