I have a pet langolier.
It's not easy, I have to squirt him with water everytime he chews a hole in space. Time is his favorite snack, hence why you would be able to live forever in my room. I'm still trying to find out how to patch up the wormholes and space-holes in the back yard he has made. The neighbors are starting to complain.
The worst part is that he poops gravity(which explains why I'm always heavier in my room -.-). You can't see it, but you'll know you stepped in it when your foot feels heavier. Just keep walking. It's only gravity, it'll wear off.
Occasionally, he likes to go through a time rip and munch up the past, but I'm trying to restrict him.
Oh, MoriaFox wants one. So I'm going to try to breed him to a female.
Here's a pic of him: