- Brenda Edwards
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- Added 12 Oct 2011
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I was told this is a muskrat when I first spotted it but have since learned that it is actually a nutria (nutria-rat, coypu) and just learned that the teeth are orange due to iron. It is naturally occuring in the incisors of some rodents to strengthen them since they chew on very dense stems, branches and wood for both food and shelter. The back side of the teeth are softer so they wear in a chisel shape. Josey Ranch Lake, Carrollton, Texas
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