You were in the Mexican Special Forces, Los Vaqueros. Your Colonel, Alejandro, was a Nagual hybrid, capable of changing into a leopard or cougar. He was proud of it, free to embrace and show it.
You weren't. You were a shapeshifter, and you hid it. For personal business. Everyone thought you were just some human. Until, one night, you awoke to a pang of hunger in your stomach. You found that you had shapeshifted into your non-human form...again.
Without much thought and an urge to eat something, you walked over to the mess hall and started to search around for anything to eat...Until, you saw something out of the corner of your eye. A cat-like man with dark hair and -
Oh, god, it was your Colonel. Standing right there, staring at you in shock.