If you live near the water and your dog is a little accident prone, you may be interested in this lifesaving flotation device for Fido called the Float-a-Pet (pause for laughter). It strikes me as somewhat dubious on first glance — seriously, can't all dogs swim? I guess they would get tired after a while, though.

The Float-a-Pet, which fits around the neck of your pooch, has two main features: One is a passive nightlight that uses solar cells to collect energy during the day for powering highly visible LEDs at night. The other, most useful if your dog slips into a pool (or is still on the deck of your luxury yacht when you submerge it), is a clipped-on CO₂ cartridge that inflates the collar into a float when triggered by a humidity sensor. This would of course be even better if you could track your dog via GPS as well. — Nino Marchetti

Float-a-Pet, via Coolest Gadgets