
Whistle is a technology company that creates smart devices and GPS trackers to help pet parents deliver personalized, preventative care for their pets. Their products include GPS collars and health trackers that provide insights into pet behavior and health, powered by an extensive database of pet health data. With over 500,000 dogs' health data tracked and billions of activity minutes analyzed, Whistle positions itself as a leader in pet health technology, leveraging AI and veterinary expertise to enhance pet care and improve the quality of life for pets.

Whistle is a technology company that creates smart devices and GPS trackers to help pet parents deliver personalized, preventative care for their pets. Their products include GPS collars and health trackers that provide insights into pet behavior and health, powered by an extensive database of pet health data. With over 500,000 dogs' health data tracked and billions of activity minutes analyzed, Whistle positions itself as a leader in pet health technology, leveraging AI and veterinary expertise to enhance pet care and improve the quality of life for pets.
Core product: GPS and health/activity trackers plus companion mobile app for pets
Founded: 2012
Acquisitions/ownership: Acquired by Mars Petcare (2016); later joined Tractive (announced 2025)
Reported funding: Approximately $21M total prior to acquisition
Pet health monitoring, activity tracking, location/GPS tracking, preventative veterinary insights
2012
Pet technology / pet wearables
6000000
Reported Series A of $6M (June 2013)
15000000
Reported Series B of $15M (Jan 2015); participants included Qualcomm Ventures, Melo7 Tech Partners and Queensbridge
Acquired by Mars Petcare in March 2016
Joined Tractive family (announced July 28, 2025)