Draw two medium circles and a big rectangular in the center.
Enhance the face of the Bull by adding a face and ears.
Draw four stone like ovals and draw two glass like rectangular shapes for legs and feet respectively.
Now, Join the legs.
Draw the tail and the fourth leg in 3-D as shown.
Now further enhance the shape of the body.
Make the eyes, ears and the facial muscles.
Now draw the neckline and the feet with fingers.
Now further enhance the complete drawing and add some finishing touch.