Purr rumbled through the dark as Zim laid on the floor, injured. The cat prodded at the Invader's head and mewed. Weakly pushing the cat away, Zim hoarsely yelled, "Go away, you filthy earth creature!" The cat, determined not to give up, wiggled his head beneath Zim's arm, purring and rubbing all over him. Zim, too injured to do anything, just stared at the cat, who was obviously trying to help him.
The cat however, had more plans. He bit onto Zim's leg, which caused him to yelp. The cat, loosening it's grip, pulled as hard as he could toward the next room. It took a while before they actually made it, but the cat managed to pull Zim onto a rug. He proudly puffed out his chest, making a prrow noise. Zim, now awkwardly loving the cat, stretched out his hand to pet the cat. With this good deed accomplished, the cat licked Zim's head and padded off, purring loudly.
And that is one Earth thing Zim likes, OTHER than waffles.
bloody your hands on a cactus tree
wipe it on your dress
and send it to me