Cairo does that after a bath ( he only gets one if he gets into poison ivy, or gets dirty on his walks), B500, then shakes his "gutted" toys, then has to have some duck jerky or beef lung.
the pics and video are amazing. The other day my husband told me Champ jumped up and growled at some children. Of couse I already started thinking he's getting aggresive but after watching the video we realized he was singing.