Some dogs need a job more than they need another walk, and the ten minutes between you sitting down and them deciding that you should not have is where most household destruction begins. A ball that moves under its own power gives a dog something unpredictable to chase without a human at the other end of it, which is a genuinely different kind of enrichment from a ball you throw.

The shell is E-TPU, a foamed elastic material chosen because it takes repeated jaw pressure and deforms rather than shattering, and the unit is rated IP54, so wet grass and a muddy garden are no problem. It charges over USB-C rather than a proprietary cable, which in practice is the difference between a toy that keeps getting used and one that dies in a drawer. Four colourways are listed.

• Moves by itself to trigger chasing
• Chew-resistant E-TPU shell
• IP54 rating for splashes and wet grass
• USB-C rechargeable
• Suitable for indoor and outdoor use
• Four colours: red, blue, white and orange, white and blue

Chew-resistant is not chew-proof, and there are electronics inside this one. Supervise every session, and if your dog is a determined destroyer who opens a tennis ball within a minute, this is not the toy for them. Take it away and check it for splits after play rather than leaving it down all day. IP54 covers splashes, not swimming, so keep it out of ponds and paddling pools.

Who it's for: High-energy dogs who need mental work indoors, and owners looking for enrichment that does not depend on somebody throwing something.