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Creeping ancylid mollusk. Robert Aguilar/Smithsonian Environmental Research Center

invasive

Creeping Ancylid

Mollusk - Ferrissia rivularis

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cutbow illustration by Joseph R. Tomelleri.

invasive

Cutbow

Fish -

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Desert Spiny Lizard, NPS

invasive

Desert Spiny Lizard

Reptile - Sceloporous magister

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Cormorant, Wayne D. Lewis

invasive

Double-crested Cormorant

Bird - Phalacrocorax auritus

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Collared lizard, Tony Gurzick

invasive

Eastern Collared Lizard

Reptile - Crotaphytus collaris

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Eastern Hog-nosed Snake, NPS

invasive

Eastern Hognose Snake

Reptile - Heterodon platirhinos

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Elk. Wayne D Lewis/CPW

invasive

Elk

Mammal - Cervus canadensis nelsoni

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Emerald Ash Borer. Leah Bauer/USDA

invasive

Emerald Ash Borer

Insect - Agrilus planipennis

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