2012, Day 181 - Circling sharks

Now that it is summer tis the season for romping with puppies.  The little monsters have so much energy so it is a joy to watch them play themselves to exhaustion.  These sweet sisters look like they're going to chew each other's legs off but I assure you that they're having a grand time.  Still, those needle-like teeth make me cringe, those suckers hurt!

Canon 5D Mark III, Canon 24-105/f4L IS
105mm, f5.6, 1/2500 sec @ 320 ISO