In his boss battle, Very Gnawty repeatedly hops across the arena. If Donkey Kong and Diddy Kong get hit by Very Gnawty, they get injured. The Kongs can jump on Very Gnawty to attack it. After each hit, Very Gnawty moves around faster. After five hits, Very Gnawty pants and collapses onto the ground in defeat.
In the Game Boy Advance version, when Very Gnawty is hit, he jumps to the other side of the arena before continuing to hop around. Additionally, after defeating Really Gnawty, the Kongs can find Very Gnawty in DK's Tree House. When they enter DK's Tree House, Very Gnawty turns around and sees the Kongs, then pants, and bounces out the entrance. This event only occurs per game file.
Very Gnawty has black-patterned green fur and pink hands, ears and webbed feet. It has three fingers on each hand. Very Gnawty has an orange belly and tail and two buckteeth. In the Game Boy Advance version, Very Gnawty's fur color was changed to red, formerly that of Really Gnawty's, who in turn had its fur color changed to blue. They also have a larger appearance, nearly twice the size of Diddy Kong.