Harry glanced at the back row to which Hagrid was heading and realised what was guiding him, for there, dressed in a jacket and trousers each the size of a small mar-quee, was the giant Grawp, his great ugly boulder-like head bowed, docile, almost human.
There are no more uses of "docile" in the book.
Show samples from other sources
[We] show them all the tricks that can save them from death. They listen, they are docile—but when it begins again, in their excitement they do everything wrong.
Erich Maria Remarque -- All Quiet on the Western Front
The wights are convinced we peculiar children are docile and weak.