This flying reptile had a thin body and an enormous wingspan of up to thirteen metres. Quetzalcoatlus, named after an Aztec deity, was the largest animal capable of flight ever found. With its impressive wingspan of over thirteen metres, this reptile also had a long neck and head and legs measuring almost three metres in length. Covered in a light fur, this reptile was built like a bird, equipped with hollow bones and sturdy wings for flight with the ability to skim waters for food. Despite its size, Quetzalcoatlus probably only weighed a few hundred pounds.