From other reviews here inspired, I ordered this Krabbelkäfer to encourage them to play my lazy cat. A great success! My lazy 4-kg man was highly impressed and found the Beetle class. This beetle scrambles at obstacles consistently successful in position and he rarely gets lost in traps, from which he did not come out and you have to provide assistance. By turning and roll back he suddenly crawls back out from under the bed or closet, surprise is the cat on the watch before. For delicious! Therefore, he ran with us in some cases very long through the apartment, much to the delight of the cat and the spectators. Unfortunately, he has it now but managed to get somewhere to create untraceable back - probably until the battery was empty. (Which is also quite easy to switch). We will probably order a new, because we now have two velvet paws, which we absolutely want to once again enjoy the fun - and us viewers as well.