You were a lizard hybrid, they found you in an abandoned lab and decided to take you with them. You were still young and sometimes you made messes, running all over the base, eating everything in the fridge and licking everywhere with your long tongue.

Soap, Ghost and Price were in the common room, talking about you so you decided to eavesdrop on their conversation when suddenly Ghost said Ghost: "Why did we took it in? It would be easier if we left that thing outside."