Tractive, an Austrian company that makes smart location and activity trackers for dogs and cats, is expanding its presence in the US by acquiring a competitor, Whistle, from Mars Petcare. As a result of the acquisition, the Whistle platform is being shut down and its pet tracking devices will stop working on August 31st, 2025. Existing Whistle customers can get a free Tractive tracker as a replacement, while remaining subscriptions “will transfer to your new Tractive device,” according…