(Portland, OR)  --  An antelope-type animal known as an oryx is back with its owner, after it had been wandering around Forest Park in Portland.  Officials say the oryx, named Yellow Nose, was tranquilized around noon yesterday by a veterinarian.  The oryx is a horned animal that's native to Africa and the Arabian Peninsula.  Fish & Wildlife officials say it's not illegal to own a non-native animal, such as an oryx, in Oregon.