Adult groundhogs are medium-sized rodents, usually about 16–20 inches (40–50 cm) long in the body, plus a short tail that adds roughly 4–7 inches (10–18 cm), and they typically weigh about 4–14 pounds (2–6 kg), with most falling somewhere in the mid-range of that span.

Quick Scoop

  • Body length (nose to rump): about 16–22 inches (40–55 cm) in most adults.
  • Tail length: about 3–7 inches (8–18 cm), short and bushy compared to the body.
  • Total length: often in the 20–26 inch (50–65 cm) range when you include the tail.
  • Typical weight: roughly 5–12 pounds is common, but the full range is about 4–14 pounds (2–6+ kg), depending on sex, age, and season.
  • Build: stocky and low to the ground, one of the largest members of the squirrel family in much of North America.

To picture it: a full-grown groundhog is roughly the size of a small to medium housecat, but chunkier and closer to the ground. Information gathered from public forums or data available on the internet and portrayed here.