An underage mountain lion has been caught after trying to slip into a casino in downtown Reno, Nev., ahead of the breakfast rush.Nevada Department of Wildlife spokesman Chris Healy says the young male cat's behavior was "almost the equivalent of being a stupid teenager."Healy says coming-of-age cougars often end up where they shouldn't after being chased out of a territory by adults.Guests at Harrah's reported seeing the 100-pound cat trying to walk into the casino.When the animal couldn't negotiate the revolving door, it hid under an outdoor stage in a nearby plaza.State wildlife officials tranquilized the roughly 2-year-old cat and plan to release it into the wild after tagging it for participation in a University of Nevada, Reno study.Officials planned to tag the animal and check its health before releasing it back into the wild.No injuries were reported.