SmartSense Pet is an AI-powered wearable device that enables real-time health, safety, and behavior tracking for dogs. It integrates a BME688 environmental sensor, PA1010D GPS module, and Particle Boron microcontroller with cellular IoT support. The system addresses common pet care challenges by offering geo-fencing, air quality and temperature alerts, and behavior insights without relying on Wi-Fi or smartphones. Core challenges included environmental accuracy, GPS signal variability, and power consumption [1]. Experimental trials confirmed the accuracy and reliability of temperature readings and GPS location tracking. Comparisons with three existing pet monitoring systems revealed that SmartSense Pet improves upon each by unifying sensor data, real-time AI processing, and cloud connectivity in a single platform [2]. The device is particularly useful for outdoor, traveling, or off-grid pet owners who require constant insight into their dog’s status. This work highlights how sensor fusion and machine intelligence can redefine pet care through smarter, data-driven tools.