When selecting an electronic dog, buyers must distinguish between robotic toy pets and automotive radar detectors. For robotic pets, prioritize AI interaction capabilities, sensor sensitivity (touch, sound, and infrared), and battery longevity (lithium-ion preferred). For automotive devices, focus on GPS database update frequency, frequency band coverage (K, Ka, Ku, X, and Laser), and false alarm filtering algorithms. Always ensure the outer casing is made of flame-retardant ABS plastic for safety and durability.