You couldn't see very well, everything was dark and humid, not to mention extremely hot and rising. Moving was also out of the question, your body was kept very tightly by the stomach walls and getting squished together even further with each passing second. You could hardly breathe due to your chest and lungs barely having any space to expand, but also because the air was almost non-existent in the Shepard's belly. Whenever you did get a chance to breath, it heavily smelled like dog food. Which you were technically also.
The experience was surely surreal, at first, you liked it, but now you weren't so sure. While you couldn't see much, you could hear a lot, the Shepard's content heart, his surprisingly calm breathing, and loud gurgles coming from everywhere and getting even louder by the minute alongside the rising heat. You could feel the humidity rise in your very small chamber as a boiling pool slowly rises and submerges your body. It didn't hurt at first, but that quickly changed, you began to feel your body melting, going soft and disconnecting from your mind. Your head was getting hazy too, so you closed your eyes and tried to go to sleep. Maybe when you're unconscious, it would feel better.
The German Shepard remained on the porch, continuing to watch over the farm, while his siblings nap in the house and a strange human boils in his gut. Though, he doesn't seem to care about the human he just ate anymore, he can't even remember how he looked like, only that it was his meal. The human knew that also, it didn't budge even so slightly, only remained curled up as his stomach made it, and gurgles it away. Sometimes, the German Shepard would release a powerful burp, making his stomach contract on his meal and fastening the process.
The whole day passed with the Shepard listening to his own gurgles as his huge belly with a human's shape slowly softened, and the shape disappeared. Then, just as slowly, his belly shrunk back to its original size.
The night came, and his belly had just a very small bulge on it, that was barely noticeable, the gurgles were also almost dead quiet and faint. Though, as his hefty meal got digested, its nutrient got added to his body. The German Shepard felt reinvigorated, even tho he spent the entire day watching over the farm. His body changed also, it got his meal's fat as his own fat, his rear and hind legs got most of it, making his butt look like two huge pillows. It was a weird change, but a welcoming one, since now whenever he sat down, it felt way more comfortable. Since he's mostly the guarding dog, he'll do that a lot.
The German Shepard burped one last time, before returning inside, shaking his rear from side to side, so that his siblings get jealous of it. Wherever you were aware or not, your life succumbed to being a dog's cushion and attention seeking.