Oklahoma’s overlay holds 239 records for the groundhog, one of the more frequently documented burrowers among the state’s mammal cells.
A woodland-edge animal, not a plains one
The groundhog needs brush, timber, or a hedgerow close to its burrow entrance, so its Oklahoma range tracks the state’s wooded half rather than the open High Plains of the Panhandle. Records run heaviest through the Ozark and Ouachita highlands in the east and across the Cross Timbers, the belt of blackjack oak woodland and tallgrass prairie that cuts north to south through the middle of the state. West of that line, where trees thin out into shortgrass, the species drops off fast.
A spring surge that fades by fall
Monthly records climb steeply from February through June, then taper off for the rest of the year. That shape matches a true hibernator waking from its winter burrow: an Oklahoma groundhog emerges in late winter, forages hard through spring before the grass and undergrowth grow tall enough to hide it, then becomes harder to spot once summer cover thickens and it settles back into a quieter routine ahead of denning up again for winter.
Status in Oklahoma
NatureServe ranks the groundhog S3, vulnerable, in Oklahoma, and it’s native to the state. That rank sits below the species’ secure standing across most of its range, a reminder that Oklahoma’s Cross Timbers and eastern forests mark closer to the edge of groundhog country than the core of it.
