A HighTop from Star Fox Adventures.
HighTops are a tribe of Apatosaurus that reside on Dinosaur Planet. It is stated that they're quite common, despite not being seen too often. You can find the first one in Cape Claw. This one needs help finding his treasure, and Fox will be rewarded if he does so. The other is located in Dragon Rock where Fox rides him to unlock the path to the fortress where the final SpellStone is located.