I mean, it's a robot dog. You don't have a throttle ... Maybe it's closer to a horse than an ATV in that respect? Still, it has four wheels. Its legs are essentially its suspension system.

For pet and lab mice, running wheels are a common feature, often used to encourage exercise. However, some scientists have argued that mice only run on these wheels because they live in cages and that ...

Cat wheels may look a little silly, but they provide cats with an opportunity to run around and get their energy out without ...