NEW YORK (AP) — Bad news for lazy dogs: A new device, called Whistle, lets pet owners track how much exercise — or sleep — their four-legged friends are getting. Whistle is similar to popular activity trackers designed for humans. The Whistle app, available for Apple and Android smartphones, is nicely designed. Multiple people can download the app and see the same data through the same account, which is a great if others help care for your dog. [...] the device locks on to a rubber strap that is then wrapped around the dog collar. Because it is waterproof, dogs can take the Whistle with them for a swim, the company says. The Whistle is charged through a USB cord that plugs into a computer or laptop.