" If Sybill Trelawney’s post as Divination teacher required her to predict danger, employment as the Care of Magical Creatures teacher put you right in the middle of it. Rubeus Hagrid adored the beasts in his care, from his forbidden dragon to his arachnid friend Aragog. The man in the job before Hagrid – Silvanus Kettleburn – also loved magical beasts. He also, presumably, loved having the full use of all his limbs – something he certainly did not have by the time he retired. "
― J.K. Rowling , Short Stories from Hogwarts of Heroism, Hardship and Dangerous Hobbies (Pottermore Presents, #1)