Egil spent a lot of time alone as a kid, so he ended up with half a million dumb ways to spend time, such as exploring the cliffs by his village.
One day he slipped on some ice and fell off one of the cliffs, he broke his leg and got a concussion. Lokki came as soon as he heard and refused to leave Egil’s side for the next few months. (He kinda blamed himself for leaving Egil alone)