This is the Lynx M20S: a new all-terrain robot dog that has more capacity and higher speed. It is flexible enough to change its pose to fit under a car. The robot weighs 35kg. It has enough power to carry up to 100kg load. In fact, you can get a ride from it. As the below video shows, this robot dog can carry 30kg of load across complex environments.
As explained in the video, this robot achieves a top speed of 9m/s. You can find out more here.