I bought my elderly mother 2 Glocks and Shotgun for home defense. One Glock is for hers to carry on her body. The other is kept hidden in her bathroom (her retreat) with a 33 round extended magazine.  The thug that tries to get into her bathroom will have to fight past 33 rounds first. The shotgun is near the front entry to shoot the thugs off her lawn. 

This would have worked for a moose too.