In these pictures, he is attempting to catch a small branch which is being dangled tantalizingly in front of him. His efforts to move 'on the double' have actually created a double image!
In this picture, he was only moving his head, so you get double the ears. Eary isn't it?
In this shot, Sox was moving his entire uppurr body, so the image appears to be twins -- and conjoined twins at that!
"I'm ackshully BESIDE MYSELF -- is shocking!!!"