I meant to post about this sooner, but you know how things go.
Science Daily had an article about the evolution of dogs. This sentence pretty much sums it up:
Domestic dogs don’t live in the wild so they don’t have to run after things and kill them — their food comes out of a tin and the toughest thing they’ll ever have to chew is their owner’s slippers.
Could you imagine a pack of Ellies hunting for food?