From the Super Mario Wiki
“Ack! That thing's back looks so... pointy!”
—Purple Toad, Super Mario Galaxy 2
Pupdozers are dinosaur-like enemies from Super Mario Galaxy 2. Pupdozers are only found in the Flipsville Galaxy, where they will usually be patrolling a small area. Mario can defeat them by using flipping platforms to flip them over causing the weak spot on their bellies to be exposed. Pupdozers are reptilian in appearance; they have a row of purple spikes on their backs, short tails, yellow underbellies, and brown backs. Their leader is a giant Pupdozer called Glamdozer. They bear a slight resemblance to Dino Rhinos.
Names in other languages
butto-n (Pro: boot-tonne)
||Possibly from the English belly