How to Recognize Groundhog Sounds

The common groundhog, also known as a woodchuck, is most famous for its fabled ability to predict the end of winter by coming out of hibernation to see its own shadow. Groundhogs are also known for their complex vocalizations, involving a series of whistles, squeals and barks. These sounds are often used to warn other groundhogs about approaching predators.

Instructions

Difficulty: Moderately Easy

1. Recognize the complex series of whistling sounds a groundhog makes in order to warn others of approaching dangers and predators. Some naturalists have observed different types of whistles for different types of predators, such as wolves, coyotes, bobcats, snakes or humans, who occasionally hunt the groundhog to control the population. Groundhogs may also whistle to locate other groundhogs, although this is rare.
2. Listen for distinct squealing sounds to recognize a groundhog that may be under attack or in distress. This high-pitched squeal is usually emitted by the groundhog to alert others that the groundhog has encountered a predator. Groundhogs can be fairly aggressive when fighting, using their sharp claws, powerful arms and teeth to discourage predators.
3. Observe some of the low clicking sounds that may be caused when a groundhog grinds its teeth. These sounds are often given to inform other groundhogs in the area as to a certain animal's location, or whether an abundant food source has been located. Even though several groundhogs may occupy a single burrow, they usually gather and eat food individually, which makes them vulnerable to predators.
4. Note a series of low, guttural barking sounds. These sounds are an integral part of the language of groundhogs, but you often hear them emitted only when the animal is on its own. The meaning of these sounds is unknown.
5. Learn to recognize the various sounds made by groundhogs by listening to recordings on websites such as Hog Haven (see Resources below). These sounds range from "happy" grunts to the sounds of squealing groundhogs caught in a fight with a predator.

Tips & Warnings

• The groundhog is also known is some parts of north America as a whistle pig, due to its propensity for emitting high whistling sounds when predators come close.