Some observations that I have made after working with the rig:
1. The tail is pain to animate, I think I should have went with an IK, rather than an FK on an IK, the slightest hip movement magnifies the tail's movement
2. I put too many controls on the head. I got the entire head control on one control curve which means a LOT of keyframes. I should have placed the main controls on one curve and the details like hair and overlapping tools on another curve.
Other than those observations, I think it's a pretty good rig.
Anyways, here's the progress video: