Saved in Blender 5.1, might work in earlier versions, might not. Made in cycles in mind, but should work in EEVEE as well.

Rigged with rigify, the IK/FK switches are on the Tweak layer, facial controls should be easy to use, just move/scale bones.

The model is posed, select all bones in pose mode and press ALT+R/ALT+G/ALT+S to reset to rest pose.

For the cow outfit, use the cow outfit mask and enable "cow squish" shape key.
