I hope I am doing this right, here's a video of Sylvia & Comet playing chase in the yard. They will do this for hours on end. Enjoy!
http://s181.photobucket.com/albums/x152/anmccleod/?action=view¤t=snow039.flv
http://s181.photobucket.com/albums/x152/anmccleod/?action=view¤t=snow039.flv