Bixby the animal

This is Linda's pet. You can't quite tell what it is, as its shape seems to be in a constant state of flux. A gigantic animal of some type. She is covered in blue scales. She has 4 arms, 8 legs, 2 heads, 5 wings, and is shaking amourously in the corner. She notices your gaze, and changes shape, just to amuse you.