With our bunny, it was impossible, as the medicine was always in liquid form. Thankfully sometimes she liked the taste and would lap it from the end of the eyedropper.

Our family dogs, cheese, or peanut butter usually did the trick, but after a while it was the "open do's moth, throw the pill down as far back into the throat as you could, then hold the muzzle shut and stroke the throughout. Otherwise our dogs all be came quite adept at eating the bribe and spitting out the pill when she thought we weren't looking!