Step 1: Begin by drawing the head, making it mostly “V” shaped with a blunt end and a curve for the forehead and jawline. Make sure to add in a curve for the mouth and a smaller curve above for the nose.
Step 2: Next you'll draw a circle for the eye and then fill it in.
Step 3: Then draw the pointed ears near the top of the head with small curved lines for the detail inside the ears.
Step 4: Draw in the body. Draw the back with a curve opposite the head and a line for the mane just above the neck. Draw a line diagonally from about the middle of the jaw.
Step 5: Next, draw in the long, thin legs. Draw the front leg and a line across the very bottom for the hoof. Then you'll draw in the other front leg to the left of the first one, making it straight with a curve just above the hoof. Next draw the curving back legs, making sure the one on the right is slightly shorter. Draw in the curve connecting the sets of legs.
Step 6: Finally, draw two curved lines in an “S” shape that meets near the end.
How to Draw a Cartoon Onager – Step-by-Step Tutorial