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Snake River cutthroat illustration by Joseph R. Tomelleri.

invasive

Snake River Cutthroat Trout

Fish -

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Snowshoe, NPS

invasive

Snowshoe Hare

Mammal - Lepus americanus

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Spiny soft-shell turtle. Sam Stuckel/USFWS

invasive

Spiny Softshell Turtle

Reptile - Apalone (Trionyx) spinifera

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Splake illustration by Joseph R. Tomelleri.

invasive

Splake

Fish -

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Spotted bat, NPS

invasive

Spotted Bat

Mammal - Euderma maculatum

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This species needs a photo.

invasive

Striated Fingernail Clam

Mollusk - Sphaerium striatinum

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striped bass illustration by Joseph R. Tomelleri.

invasive

Striped Bass

Fish - Morone saxatilis

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Swampy Lymnaea. Hans Zwitzer, BY-SA-NC

invasive

Swampy Lymnaea

Mollusk - Lymnaea (Stagnicola) stagnalis

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Swift fox, Greg Schroeder, NPS

invasive

State Special Concern

Swift Fox

Mammal - Vulpes velox

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Physa snail. Gail Hampshire CC 2.0

invasive

Tadpole Physa

Mollusk - Physa (Physella) acuta