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| A group of immature bullfrogs gather in a shallow stretch of the Umpqua River near Elkton in western Oregon on Sunday, Sept. 16, 2018. Bullfrogs are native to the central and eastern United States and are considered an invasive species in Oregon. They impact water quality and prey upon many native turtles, frogs and snakes. |
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| A bullfrog with its tadpole tail still intact sits on a rock near the water. |
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