That was...a lot of information that Marcus didn't really care to know. Vitamins, digestive systems, experimenting with brands. Seemed like a hell of a lot of work for a bloody animal, and not even an expensive, purebred animal either. He wasn't sure what sort of cat the stray was, but it was clearly a mix.
"It's a damn cat, not a child," he muttered, but he took the food the clerk had given him anyway, doing his best to ignore the way his hand brushed over the other man's slender fingers. He was here for cat food, and cat food only. Discretely he checked the price, and found that it was within his budget (and he cringed to know that he needed a budget now), and if it would keep the cat from dying on his watch, well, that was just fine. It didn't mean he was attached to the creature.
With the bag of food under his arm, he stepped back to put some space between them. "Yes, well, I appreciate your help. If you could just point me in the direction of the self-cleaning cat boxes, I'll be on my way." He wasn't sure if such a thing existed, but it had better. There were many things Marcus had found himself doing as of late, but cleaning up after an animal was not going to be among them.