Wearable activity trackers; sensors for veterinary use for measuring and tracking biometric measurements; electronic devices for measuring and tracking biometric measurements embedded in a pet vest, pet harness or pet collar; implantable activity trackers; implantable sensors for veterinary use for measuring and tracking biometric measurements; implantable electronic devices for measuring and tracking biometric measurements; downloadable computer software for monitoring, tracking, analyzing, and sharing data from activity trackers; downloadable computer software for monitoring, tracking, analyzing, and sharing data from sensors and electronic devices for measuring and tracking biometric measurements; downloadable computer software for diagnosing health conditions; online, non-downloadable computer software for monitoring, tracking, analyzing, and sharing data from activity trackers; online, non-downloadable computer software for monitoring, tracking, analyzing, and sharing data from sensors and electronic devices for measuring and tracking biometric measurements; online, non-downloadable computer software for diagnosing health conditions; downloadable computer software for use in shopping for pet-related and healthcare products; online retail store services featuring pet-related and healthcare products; provision of information in the fields of veterinary care and pet health; provision of blog and social media posts in the fields of veterinary care and pet health; provision of online, non-downloadable videos in the fields of veterinary care and pet health; provision of newsletters in the fields of veterinary care and pet health; provision of lectures in the fields of veterinary care and pet health; conducting veterinary research and clinical trials for others;