AN: I just watched the movie "Thor" twice, and then realized Thor and Loki were also Norse gods. I did some research and it intrigued me that Loki turned into a mare to give birth to Sleipnir. This is my take on the birth.
AN: Thor and Loki are brothers here, as they believe they are in the movie.
Thor's POV
As a mare, Loki's belly was round and full with the stallion Svaoilfari's offspring, that much I knew. Right now, we were all walking leisurely through the forest, Svaoilfari nuzzling Loki and his child affectionately every now and again.
Suddenly, Loki stopped. Svaoilfari stopped with him, and Loki let out a whimpered neigh to his mate. Svaoilfari called out loudly to call me back. I went, and saw Loki's full belly heave as his birth pains came upon him.
"Go, go! We don't have much time!" I sent them out of the woods to a clearing, and as they began the slow, painful walk there, I ran to a creek that was a few miles behind us.
When I returned to where they were, Svaoilfari's was the only body I could see. He was guarding Loki as he lay on the ground beside him.
I very slowly walked around the stallion to get to my birthing brother, only to have the sire growl at me and curl tighter around his mare.
"No," I finally stepped forward and seperated them just a little, "Give him some room," I was now able to get close to Loki.
After many hours, when night had fallen, Loki whinnied lowly, in pain. Then he laid flat in the grass and began to pant. He pushed, and I was ready. As the head began to emerge, Loki groaned and screamed. Svaolifari nuzzled him to comfort him.
The head of the foal finally came free, and after three more hard pushes, the body came as well. Loki sat up and began to clean his child. It was only after Loki had nudged the foal to a stand and was giving him his first taste of milk that I realized he had eight legs.
Some time later, Loki shapeshifted back into a human male and leaned against Svaolifari's shoulder, exhausted.
"What will you name him?" I asked.
"Sleipnir," the colt nuzzled his mother's thigh and Loki bent down to kiss his still-wet, gray forehead, "My beloved babe..."