Oh! Playing with the stick! Gladio bends down and sinks his teeth into the stick, giving another play-growl as he tugs on it. The man-child doesn't seem very strong, so he just gives a ... gentle tug. Or well, an attempting-to-be-gentle tug. This is a pup that doesn't know his own strength.

The fact that the Amiticia are all werewolves is a well-kept secret, used only in the last line of defense in protecting the King, though nothing stops their full-moon time. So the fact that someone other than the two young ones is currently trying to slip through the gardens... speaks of an outsider.