THE FROG ROLLS IN
'(<a href="http://www.j-archive.com/media/2009-07-08_J_23.jpg" target="_blank">Jimmy of the Clue Crew shows a radiograph of a frog on the monitor.</a>)  A frog's hind legs have a humanlike femur, but unlike humans, their single <a href="http://www.j-archive.com/media/2009-07-08_J_23a.jpg" target="_blank">shin bone</a> is these two bones fused together'
the tibia & the fibula