Were-creatures BAU - Reid a were-cub

Hey guys!! I'm trying to find a story I read a while ago. Reid was raised by his mom, who is a human and didn't realize that Reid wasn't or her illness didn't let her know since his dad, who was a were-creature and should have trained him on all things were, wasn't there. I think Gideon finds him during one of his university tours and realizes what Reid is. Reid has no idea and everyone realizes that Reid can't shift or is too sick to shift and that it would cause him serious problems if he didn't. When he finally does, he shifts into a baby lion, or some kind of predatory cat and they are all shocked since the team is filled with wolf shifters. I think at one point the team has to go into another Alpha's territory and having Reid with them causes problems. Sorry, that's all I remember . . . HELP!!! :D

FOUND!!! by the wonderful micksmouse , it's the Strength of the Pack by Welfycat