Grumpy Old Geeks Products Whistle Product Whistle 6 mentions in 2 episodes A dog activity device the hosts compare to a Fitbit. Mentions 154: Fool Free Zone Apr 1, 2016 56:50 Whistle the Fitbit, Fitbit for dogs 57:38 this Fitbit for dogs ... just sold to Mars pet care for $100 million 25: The Breakout Viral Podcast of the Year Sep 15, 2013 41:02 Well, it's called Whistle. 41:40 it is a Fitbit for a dog 42:24 you can check in from your phone 42:39 Waterproof, so they can go swimming. Wireless sync via Wi-Fi or Bluetooth.