Dogs at night lights

Why would anyone attach a bike flasher to their dog? What is this about? Do you really need so badly to see where your dog is at? Is he/she going to wonder that far, like into traffic? No, dogs don't wonder that far away generally, especially at night so this must be about something else, like lighting up our world.
At left is is the Nite Lite Collar, nice...

above: Bling Bling Blinker
doggy night lights
more nite lights
for hunting: wa da f...?!
a game that involves dogs and lights
glow leash
collar beacon