And for those who have everything: Whistle

last updated 10 January 2015

Wearable computers have officially gone to the dogs. Like Fitbit’s bracelets and other wearable devices used to measure human activity levels, Whistle tracks how much energy your canine is burning. “Why does a dog need to be Bluetooth-connected?” For now, the best answer might be that it’s useful for a pet owner to know how many naps and walks Fido is getting when a sitter is taking responsibility for his care. The coin-size Whistle disc attaches to the dog’s collar and feeds activity data in chart form to a mobile-phone app.

$130, whistle.com