beavers don’t make much sound. The young can make sounds that resemble a
duck quacking. They also whine and make several other noises. Adults sometimes
grunt while working, but are generally silent. One sound beavers are well-known
for making is the tail slap. To warn other beavers of danger, the tail will be
brought down flat against the water to make a loud slapping sound.*
This audio is of a beaver tail splash recorded by John Piekos in August 2004 in
a wetlands on the Westford/Tyngsboro line, near the MIT/Haystack land.