This is the adorable moment a deaf three-year-old began teaching her 17-month-old siblings sign language. In the cute footage, Amelia Morales can be seen flicking through a variety of animals on her parents’ iPad while carrying out the necessary hand actions to her bemused twin brothers, Benton and Conan. As well as going through the necessary hand actions, Amelia, 3, also decided to take some to the next level, pretending to bite her brothers for the likes of tiger and snake. Amelia has built up an amazing repertoire of animals in just a few years, including moose, zebra, alligator, rhino and monkey. According to Amelia’s parents, Jennifer and Jorge, who live in Missouri, the youngster could read and answer finger spelling when she was just 14 months. Younger son Conan is also hard of hearing.