Qoobo may be the perfect cat. It's soft, responsive, and will never scratch, dismiss, or leave you. It's also a robot.
On first blush, I wasn't quite sure what to make of Yukai Engineering's Qoobo, but as soon as I picked the thing up it was pretty clear that it didn't matter. It's adorable and I couldn't stop petting it and that's pretty much the point.
As a cat owner myself, I was surprised by how realistic the tail moved, especially with how its wagging intensity increased as I petted it harder (my cat would eventually warn me with a bite).