Super-solid drawings. I love the shapes. Everything looks just right.
But maybe you could loosen up more. Try shorter, even 30-second gesture poses or more round lines. I've found that things appear to move more when the lines are round, but here's my theory on round and straight lines (I wrote it because I need more structure in my lines-- sort of the opposite of my complaint!)
Straight and curved lines can't be placed arbitrarily. Staight lines are sturdy. They can't be simplified or bent. They show structure, sturdiness, and support, whereas curved lines show weight, movement, and looseness. Basically, anything that can't move is straight, and anything that can is curved. So, the straighter a line, the less the object (or piece of it), can appear to move. The same idea seems to apply to small angles and large angles. Small arcs, like circles, don't seem to move as much as large, wide angles like ovals. Circles look stiffer than ovals.
I always look to Sky Doll for line ideas, and I think this image is a good example:
I think the ears, head, elbows, butt, ankles, heel, and arms appear to be less flexible because they're made of straight lines or small angles. The legs, tail, wings, feet and forearm seem to be able to move and flex because they're made of curved lines or wide angles.