Balinese Hilt Help Requested

[BluErf]

Here's the garuda hilt from the invincible kris.

Taking a closer look at the bat picture above, can't help but notice that even in the bat, the leg knee joints do bend in a similar fashion like human's, just that the leg has been 'rotated' 180 degrees to support the wing membrane. The knee joints bend in the opposite direction compared to birds.

But anyway, there's always a possibility that the artist had taken some artistic license on the physiological aspect of the animal form that he had intended to depict, and so strict comparisons with what we actually see in nature may not be a completely viable route to take to discern what this deity/animal form was supposed to be.