design a robust and flexible robot dog

Generate a robotic dog body structure with the following features: a robust and flexible robotic dog design, excellent mobility and stability, capable of adapting to different household environment terrains. Sensor system: including high-precision environmental perception sensors (such as LiDAR, ultrasonic sensors, etc.) for obstacle detection and environmental modeling; non-invasive biometric sensors for vital sign monitoring; cameras for image recognition and home surveillance; as well as various sensors such as tactile sensors, light sensors, and sound sensors to comprehensively collect information about the environment and user interactions. Actuator system: equipped with mechanical arms, grippers, and other devices for carrying objects, opening doors, etc.; featuring a stable walking drive system capable of precise movement and turning; built-in vibrators, lighting modules, etc. for alerting hearing-impaired individuals; also includes a voice interaction module (microphone, speaker) for voice recognition and synthesis. Add a mechanical arm to the dog's back.