A female chihuahua called Milly measured 9.65 cm (3.8 in) tall on 21 February 2013.
She is owned by Vanesa Semler of Dorado, Puerto Rico. Born on 1 Dec 2011, Milly was so small that she could fit in a teaspoon, and had to be fed milk every two hours with an eye-dropper.
She loves having her picture taken and often sticks out her tiny tongue for the camera.