How to change the menu icon

In Puppy linux 4.xx if you want to change the dog icon to the penguin icon open the file /root/.jwmrc-tray

<TrayButton label="Menu" icon="mini-penguin.xpm">root:3</TrayButton>

where mini-penguin.xpm takes the place of mini-dog.xpm. These icons are found in /usr/local/lib/X11/mini-icons