Like the similar Iguanodon, Muttaburrasaurus was a dinosaur that moved in herds for protection. Muttaburrasaurus had very powerful jaws equipped with shearing teeth. These were probably an adaptation for eating tough vegetation such as cycads, which were common in this part of Australia at the time. It also had an enlarged hollow upward-bulging muzzle that might have been used to produce distinctive calls or for display purposes. However, as no fossilised nasal tissue has been found, this remains conjecture.
