From 2speccers2tools wiki

The Yesdent. is a great animal that eats stuff in the sky and has a weirdly retracted range for some reason, it also makes burrows despite being buoyant in the atmosphere, it has regained its helium but still has wood bones so it has wood infused with the lightness of helium now, its wood also sticks out of its body to form teeth and claws that it uses to rip up piss flora and dig burrows.