They DO get really big but depending on the source and breeder, it can vary widely. They do also grow very slowly to full height. It can take 2-3 years to reach their max. I got mine from Ideal, but from all that I've read, very few hatcheries OR breeders have true, pure Saipans. They are apparently interbred with Malay and Shamo, which are more common. Regardelss, I don't care. I love mine. Had gotten them originally to assist protecting the handful of turkeys and hens I allow to freerange from predators (here, it's usually ravens and occasional hawks), but not I really love them and am surprised by how friendly and confident they already are.