This idea came from a scene from The Love God where Mabel says she thought Robbie was raised by sad wolves, so I thought "What if that was actually the case?".
Disclaimer: I don't own Gravity Falls or any of the characters.
I don't remember much about my human parents. My wolf parents say they left me in the woods and walked off laughing. When my pack found me, they debated on whether or not they should eat me, but my wolf mother, who had cubs of her own, decided to take me in and raise me as if I was her own cub.
I quickly became a member of the pack after they adopted me, but even at a young age, I knew I was different. I didn't have as much hair as my brothers and sisters, I aged less quickly than they did, and I always felt the need to stand on my hind legs rather than on all fours. Still, I was seen as a wolf like any other by my pack (too bad I was an Omega). Luckily, my mother was always there to comfort me when I needed it, giving me a bath with her tongue and such.
One day as I was waiting for the higher-ranking wolves to finish their kill, I decided to take a walk in the forest; I hoped at least if there were no scraps were left for me after words, I can catch myself a squirrel to eat or something. Suddenly, I heard some chit-chatter. I went to look, hiding behind a bush, and saw two juvenile humans walking in the woods. The male human seemed rather annoyed at the female human for making a bunch of noise. I got up a little closer to observe, but I accidentally stepped on a stick, causing it to break and make noise.
When the two saw me, I backed up, arching my back and growling at them. I kept hearing them chatting to each other, making noises like "Feral" and "Naked". The female human then walked up and put some strange orange puffs on the ground. I cautiously sniffed it; it smelt good, but I was still reluctant to eat it. I then tasted one of the puffs; tasted like a mixture between dried bison meat and my mother's milk.
The female human lay more puffs on the ground. I kept eating them, one by one, until I realized I was no longer in the woods, but inside some sort of large den made entirely out of wood.