Gopher vs Groundhog: How to Tell Them Apart

The mound shape is the single most reliable tell. A gopher creates small crescent or C-shaped mounds as it tunnels. These mounds are typically 1 to 3 inches tall and appear as elongated crescents. A groundhog creates large, rounded mounds that are 2 to 5 feet tall. The groundhog mound is obvious and substantial. This difference is visible from a distance. The size of the animal itself is the second tell. Groundhogs are stocky and sturdy, roughly the size of a house cat. Gophers are much smaller, rat-like in proportion. The third tell is the amount of above-ground activity. Groundhogs spend hours above ground, sitting upright and eating. Gophers are almost never seen above ground. They work underground constantly. The fourth tell is the burrow entrance. Groundhog burrows have large, obvious holes. Gopher tunnels have small openings, often plugged with soil. In wildlife guides across Wyoming, Wisconsin, and most states, the mound type is considered diagnostic.

Groundhogs are substantial rodents. They weigh 4 to 14 pounds, with males larger than females. They measure 16 to 27 inches from nose to tail and stand about 10 inches tall on their hind legs. Their body is stocky and muscular, built for climbing and digging. Their head is large and blocky. Gophers are much smaller animals. They weigh only 2 to 4 pounds and measure 5 to 7 inches from nose to tail. Their body is compact and streamlined for tunneling. Their head is smaller and their eyes are tiny. A groundhog is roughly 10 times heavier than a gopher and much bulkier overall. Gophers are adapted for life underground, with a narrow profile. Groundhogs are generalists that work above and below ground. The size difference is striking when you see both animals. A groundhog next to a gopher looks enormous by comparison. Groundhogs have visible facial features. Gophers appear almost featureless because they spend all their time in darkness.

Groundhogs are found across the eastern and central US from Canada to the Gulf Coast. They live in fields, meadows, and forest edges throughout the region. In Wisconsin and Wyoming, groundhogs are common in suitable habitat. Gophers are found primarily in the western and central US. Pocket gophers, the most common type, live from the Great Plains to the West Coast. Wyoming and Wisconsin both have gopher populations in grasslands and prairies. Wisconsin gophers are found in open areas and gardens across the state. Groundhogs prefer open grasslands with good drainage. They settle in meadows, pastures, and field edges. They avoid dense forests and prefer areas they can see from burrows. Gophers live in loose, well-drained soil where tunneling is easy. They are found in prairies, open woodlands, and agricultural areas. Wildlife management resources note that groundhogs are expanding their range northward due to warming. Gophers have remained relatively stable in their traditional ranges.

Groundhogs are social and visible animals. They spend several hours each day above ground feeding, basking, and watching for danger. They are active from spring through fall, spending much time sitting upright in the classic groundhog pose. They are diurnal, most active in the morning. Groundhogs are vocal and make loud barking calls and whistles to communicate and alarm. They are solitary except during breeding season. Groundhogs climb readily and are excellent swimmers. In winter, they enter hibernation and disappear underground from October through February or March. Gophers are almost never visible. They spend 95 percent of their lives underground in tunnel systems. They are active day and night, tunneling constantly in search of food. Gophers are largely silent and make no loud calls. They are solitary and territorial. A gopher's presence is known primarily through the mounds it creates and the damage to garden roots. Gophers do not hibernate and remain active throughout winter, creating new mounds under the snow.

If you saw a plump, furry animal sitting above ground, it was a groundhog. Gophers are almost never seen above ground. If you saw mounds in a garden or yard, check the mound shape. Small, crescent-shaped mounds mean gophers. Large, rounded mounds mean groundhogs. If the damage is to plant roots underground, it is likely a gopher. Groundhogs eat above-ground plants and vegetable crops in gardens. If you heard loud barking or whistling, it was a groundhog. Gophers make no sounds. If the burrow entrance is obvious and large, it is a groundhog. If the burrow openings are small and plugged, it is a gopher. If you are in Wyoming or Wisconsin and see large dirt mounds, check the size. Groundhog mounds are massive. If you are seeing signs of damage to lawn grass and roots, gophers are the culprit. If vegetables are being eaten and burrows are obvious, groundhogs are present. Combining these signs leads to reliable identification.

A widespread myth is that gophers and groundhogs are the same animal with different names. They are not. They are separate species from different rodent families. Another myth is that groundhogs are called gophers in some regions. This is wrong. The names do not vary by region. A third misconception is that both animals eat the same foods and cause the same damage. Gophers eat roots and tubers. Groundhogs eat above-ground plants and vegetables. Gopher damage is mostly underground. Groundhog damage is visible in eaten plants. Some people believe gophers hibernate like groundhogs. They do not. Gophers stay active all winter. Another myth is that gophers are larger than groundhogs. It is the opposite. Groundhogs are much larger. People also think that poisoning works equally on both species. Different baits and methods work for each due to their different diets and habits. Finally, some believe groundhogs only emerge once a year on Groundhog Day to predict spring. They are active and visible for six months or more.