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Hello! I am a vole.
I am very small.
And live underground.
I am very cute. But if many like me live in an area, we can be very destructive to plants (we eat their roots and they die!). In small numbers, we are beneficial. Like other burrowing rodents, we disperse nutrients through upper soil layers and are food for many predators. [The human who is speaking for me learned this on Wikipedia.]
This is one of the entrances to my tunnels. Down the hole goes the vole!