This would be a great idea for a planned physical activity - adapted slightly it could be used along the lines of 'we're going on a bear search'.
In the gym/playroom or in the playground, large pictures could be held up for the children to change tempo/actions whilst moving around the open space -
![Elephant](images/smilies/elephant.gif)
For stamping feet and arm swinging trunks!
![Snake](images/smilies/snake.gif)
Hissing snakes winding their way over the floor!
![Monkey](images/smilies/monkey.gif)
Monkey's swinging from vine to vine
![Star](images/smilies/star.gif)
Crocodiles - with arm snapping jaws.
![Star](images/smilies/star.gif)
Lions with prowling roars, stalking through the grass.