Glow-in-the-dark Pig

Am thinking I definitely need to get this for Pig:

Now you can see your pet wherever they go! Special lantern shaped pet tag lights up with every movement.
Motion activated using super-bright red LEDs. Emits 3 flashes and stays on.
Water resistant - Goes anywhere your pet does!
Write your pet's name and owner's phone number should your pet wander away.
Uses one replaceable CR2032 battery with 20 hours continuous run time.