The AI is the easy bit.
Go study the skeletal structure of cats and ball jointed doll articulation, then draw for me what you want your kitty to look like, with articulation, on 1mm graph paper, from several angles and with precise markings for the centre of each ball joint, and for best results figure out the degrees of freedom so you cat is able to move in a cat-like way.
Now go study how cats walk, run, jump, turn, sidestep, etc, in detail, so I can design the analog circuitry that the AI will use as an intermediary between its perception and interaction with the external world.
If I stop what I'm doing now I might be able to start construction in six months, maybe.