As Rick ate the last pound of feed, Charlie sniffed and stroked the studs and mares of the pack train.
Rick seethed at being made a beta when he is the owner, the one who fed and took care of Charlie, even when he gets colic...
Just then, Charlie grunted, his eyes bulging as he put his new arms around his belly.
Rick clopped over as Charlie sank to the ground behind the mare he had been fingering. Sassy looked back and nickered in concern to the stallions.
Charlie whickered to the only person who ever helped him in sickness.
Rick snorted, ears back as he rubbed his sore balls. "Colic! ...And you want my sympathy now? Care to rethink who's in charge, buddy? -Or shall I leave you there to twist your guts up and die?"
Charlie's eyes widened in horror, then groaning in pain, he dipped his head in submission. "y-you are... Herd leaderrr.."
Rick nodded "That's better. Now, about that 16 pounds of feed you ate. can you throw up, or are you still too horsey for that?"
Carlie shook his head, not understanding "I see.. well, lets get you up."
Rick heaved, forcing Charlie to stand "Stay up, while I get the oil."
Charlie made a face as Rick poured mineral oil into a canteen cup "Drink it up, buddy. It's the only way..."
Charlie groaned and drank the fluid, burping as he was led by the elbow around the clearing.
Several hours later, Charlie was sleeping exhausted near the fire. The oil had doen its work and cleared his system.
Rick grinned, finally back in charge of things. He clopped over to the pack horses, sniffing and licking, amazed at the power of the scents. The mares and studs submitted to him easily as he stroked and prodded them in the ways they liked when he was human. He started with Sassy to show him he was even better now. His new shaft unsheathed as he licked the silky folds beneath her tail. Sassy nickered and rocked back into the muzzle at her sex as Rick learned to use his new tongue.
Soon their scents rose and mingled in a fog of lust. Rick hurred and stood behind her, slipping his dark, pulsing horse cock into her.
Rick neighed as he plunged like a mustang, losing himself to the sensations as they bred. Minutes later, they came together, her whinny sounding like a woman's cry of bliss. He opened his eyes to find Sassy had changed as they mated, now with huge breasts swinging between her humanlike arms tipped with three fingers, now tearing at the ground in passion.
Sassy smiled back at Rick "Thank you master, may I serve you again later?"
Rick grinned "I think so, but first..."
With that, Rick goes to one of the studs as Sassy settles down to watch.