I wanted my dog to have a motorized ball to play with. I only found one: https://www.aliexpress.com/item/1005008896548024.html (i attached a pic just in case it goes offline) and while the ball itself works great (it's strong, rechargeable, actually moves) the tail is clearly meant for cats or puppies. I have a Visla. Tail came right off. So I made this sturdy version, that held on perfectly well for months (green pic). In fact I'm throwing the toy out now only because the ball itself finally gave in (also green pic).

• Print in PLA
• Enable supports
• I use 45% cubic infill
• It's a really tight fit so move the rubber around so it's not in the way