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Activity monitors used in this study. Most data in this study were acquired from Whistle FIT® activity monitors. Device dimensions are shown in (a), and a device in use is shown in (b). The device often rotates to different positions around each dog’s collar. The device can attach to most dog collars up to 1” (25 mm). Attachment detail is shown in (c). The two other devices used this study (the Whistle 3® and the Whistle GO®) are larger and heavier.
