"What the flippin' pancake is that?"
"The Red River Hog." Cas answered calmly, knowing by now that when Dean asked such a question, he wanted the common name, not the scientifically one.
"What's it doing here?"
"I found him. Quite the interesting specimen, isn't he? I like his little pointed ears, especially the tassels. They amuse me greatly"
"Where did you get it?"
"The zoh downtown, but they originate in Africa and Madagascar. They travel in groups called drifts or herds and-"
"The zoh? You mean the zoo? You stole it from the public zoo?"
Cas scowled.
"I did not 'steal' him; I rescued him. The zoo is not a nice place, Dean. Such exotic creatures do not deserve to be locked up in cities to be viewed by bored humans. If you wish to see them, it is best to do so in their natural environment. Isn't that right, Young One?"
Cas smile, patting the boar on the head.
"Cas."
"Yes, Dean?" Cas asked, still petting the pig next to him, not looking up.
"You have to take him back. Oh, come on, now. Don't give me that look. We can't drive around killing monsters and hunting Lucifer with a pig in the back seat."
"Red River Hog."
"Besides," Dean continued, ignoring the interruption, "it wouldn't be fair to the pig-"
"Red River Hog."
"-now would it? We don't have the means to take care of him properly. You have to take him back."
"… I guess." Cas sighed after a moment. The almost human suddenly brightened, looking up at Dean. He opened his mouth to say something, but Dean cut him off.
"To the zoo." Dean said forcefully, "Not his natural habitat in Africa. You can't just throw him into an unfamiliar place, surrounded by unfamiliar things. And besides, the zoo staff, and probably the police, have got to be looking for him by now."
"But Dean-"
"No buts. We can't afford to have the police on our tail because you pignapped one of the zoo's locals, and that's final."
"The police are already on your tail, Dean.""That's entirely besides the point, Castiel. Now, take him back.'
Cas sighed dramatically.
"Oh, alright, fine. I'll take him back to that horrible place where they lock up my Father's majestic creatures in small cages and…"
Cas continued his rant, trying to get Dean to change his mind, while leading the hog out of the room.
"Cas?"
The former angel spun around.
"Yes, Dean?" he asked, hopefully.
Dean smiled.
"Don't get caught returning him."
Cas slumped dejectedly, giving his friend a weak glare before turning back around.
"Yeah, yeah," he said, waving a hand over his shoulder in dismissal.
Dean chuckled, shaking his head. The only thought his amused mind could come up with was, 'Kids these days.'