User blog comment:FireTerryTiger/Night Fury Location/@comment-26818010-20160219023952

It seems possible

i do remember Toothless seems to be upset not flying at the moon appear in the second season of the defenders of berk.

Toothless does have the special ability of bat echolocation and I'm thinking with the ability of Nightvision on their side

this seems accurate of their nature

Maybe Toothless egg was fallen off the mountain and he was alone to defend itself but wouldn't make sense since he knew how to defend himself and his abilities as most animals needs their parents to guide them how to survive in the dragon world.

Unless Toothless with his mother were taken by dragon hunter and his mother sacrifice herself to protect her son to flee.

Could make sense since the dragon eye had the lens of Night fury