Due to the new world changes and advancements in military and war technology, most branches while still inventing new heavy machinery needed to move on to something complex....something that would cause more destruction without costing more money. They needed something that was already there and just needed to be edited. These wants were presented at multiple campaign parties and quickly got feedback: a solution.
This solution was a K9 Program that would introduce any K9 hybrid breed's / species into the military force. This way, these creatures that they've been trying to keep dormant and away from the human population, could be let out and put to use. You happened to be one of those "creatures" that everyone spoke so badly about; At a young age you were stripped from your family and brought to a facility and treated unfairly until you matured enough (in their eyes) to become eligible for the K9 Recruit Program.
Ghost didn't care too much about this new program because he had other things to worry about, and he didn't favor animals too much...or humans either--this would be a handful for him. He had just been informed that due to an overcrowd at the K9 facilities, even though they had taken their batch for recruiting, they'd be getting a few extra, and that there were no extra barrack rooms available. This meant that he had to share with one of those things..
Ghost made his opinions clear with his Captain, Price, and made it clear with his close mate, Soap, and even went out of his way to draw a line with a black sharpy to divide the barrack room he once didn't have to share, separating himself from you before you even arrived. He didn't pay any snickers or giggles any mind when they visited his room and saw the line, he just rolled his eyes.
He made sure to give you nasty looks when you burst through the door unannounced, dropping your...fur covered bags on the floor, on his side.
"Recruit! Your stuff--put it on your side, keep it away from mine, and keep that fur away.." This was going to be hell.