Why not celebrate with your players by dropping one of these into an adventure?
No. Enc: 1d2 (1d6)
Movement: 120' (40')
Armour Class: 6
Hit Dice: 2-4
Attacks: 1 (bite)
Hoard Class: VII
The groundhog or woodchuck is a husky, waddling rodent, belonging to the marmot family. Their fur is red or brown, with black or dark brown feet. Giant groundhogs are large beasts, measuring 4-6 feet in length, and weighing up to 200 pounds. The maximum size they reach depends entirely on the food supply in their territory. Their diet is mostly herbivorous, comprising wild grasses and other vegetation, and berries and agricultural crops when available. They will also eat eat grubs, snails, and even small animals if they are able to catch them.
They have a plump body, a broad head, and small, erect ears. The tail and legs are short, while the fingers and toes have strong claws, useful for digging. When riled, groundhogs can run as fast as a person, but they are normally slow, waddling animals, tending to stay close to the safety of their burrows. Their natural habitat is at the edge of a forest or in rough grasslands. Giant groundhogs are enthusiastic diggers, their burrows are particularly large, with up to 200 yards of tunnels and several entrances. This excavation can pose a serious threat to any structures above by undermining their foundations.
Giant groundhogs will aggressively defend their burrows and young. If encountered in the open, they will only normally attack if cornered without access to a burrow entrance.