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Step 1
Observe the animal's behavior while he makes the sound. While feeding, woodchucks make "chuck-chuck" noises. This is the sound that gave the woodchuck its name.
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Step 2
Notice how the sound changes when the animal is alarmed. A woodchuck will emit a loud, high-pitched whistle to alert any surrounding animals about approaching danger. This shrill whistle is usually followed by a quieter whistle as it retreats to its burrow. These sounds gave the woodchuck another of its popular names: whistle pig.
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Step 3
Exercise caution when you hear a woodchuck squeal; this usually indicates that it has been caught or injured by a predator. They will also make this sound when fighting with other woodchucks, and it often indicates that the animal is in pain.
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Step 4
Differentiate between communication sounds and grooming sounds, with the latter sounding like grating or grinding. Like most rodents, the teeth of a woodchuck continually grow. If allowed to overgrow, the woodchuck will have trouble eating and grooming itself, so it habitually grinds its teeth to keep them trimmed.
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Step 5
Listen for a low, quiet barking noise. Researchers have not yet identified a reason for this sound.
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Step 6
Stop whatever you are doing when you hear a woodchuck hissing. This sound is generally defensive or aggressive and is intended to drive a away predators.








