Video of the Week #69 November 15th, 2012: From: Hard Science is Going to the Dogs by Joanne Manaster at PsiVid. Source: snuggliepuppy on YouTube The most informative and adorable science video to come out this week asks us to "sit" and "stay" and "learn" chemistry as two well-trained dogs, Paige and Dexter, help us understand ionic, covalent and polar covalent chemical bonds.