Toothless outliving Hiccup.
Toothless lying down at his grave and not leaving.
Toothless starving to death because he refuses to eat anything anyone brings him.
Toothless going to Hel and begging his Mother to let him go to Odin and beg for Hiccup’s soul from Valhalla.
Toothless meeting Odin on the Bifrost and Odin shoving Hiccup at him and yelling ”In the name of everything holy, TAKE HIM!”
I thought this was going to be a sad post but…