Pond Boss Forums AERATION Systems questions Never a dull moment here....uggh

I would say beaver by the width of the two teeth marks. I doubt you would see marks over 1/2" wide from a muskrat. Muskrats are supposed to top out between 4 to 5 pounds, but I did trap some that were closer to 7 pounds. That was an area that nobody had trapped for a LONG time, and due to the lack of predators the majority of muskrats had tooth marks on their backs - this was mid November, not early Spring when breeding season is.

Another reason to keep the rodents out of your pond.........