Murray has a little blue and red flashing light that clips onto Penny's collar so that we can see her darting around in the darkness and doing the usual trick of covering twice the distance at twice the speed compared to us. It's a surprisingly bright LED and makes the whole walk a little like being at a very poorly attended rave.
The good thing about these night walks is the fabulous view:

The down side is that we are all cowards and once Penny started barking into the darkness the idea that a bear, or some equally ferocious animal like a squirrel, might be stalking us in the darkness took hold. Still it was an incentive to walk faster!
