system
Given the following post, respond as if you're commenting on Reddit:
human
[CatDog] How did CatDog happen?

I've been wondering about this for some time now, but how did that happened and why is Dog ditzy and Cat is maniacally smart?
gpt
In a post-apocalyptic wasteland, a dog and a rainicorn had a litter of pups. Due to the father's constantly feuding with magic, wizards and extradimensional beings, his sperm was altered and had interesting effects with the magic of a rainicorn womb, leading to them mistakenly believing they had 5 pups-- when in actually, they had six, with one teleporting to another dimension at birth. Unfortunately, the only half of that pup that can teleport back is too dumb to figure out how-- if he even knew he could in the first place.

It was Jake Jr's twin, if you were curious.