Sensitive Species


Bull Trout

Bull trout belong to the salmonid family of fishes with salmon and other trout. They are dark colored, from gray to brownish green, and have light colored spots. It is easy to confuse bull trout with other trout species. Bull trout are protected by both state and federal law, making it illegal to fish for bull trout.  Click here to find out how you can avoid mistaking these fish for other trout.  

Habitat: Bull trout need cold water in pristine streams or lakes to survive. They require the coldest temperatures of any salmonid and are the first to disappear when habitat and water quality are degraded. Some bull trout migrate from lakes to spawn in small tributary streams. Females bury their eggs in nests, called “redds,” about six inches deep in the streambed gravel. After spawning, most bull trout return to their original lake or stream.     

Food: Bull trout are predators; they feed on other fish, aquatic insects, fish eggs, and crayfish.

Facts: Bull trout can exceed 20 pounds. The biggest bull trout ever recorded was caught out of Lake Pend Orielle in Northern Idaho; it weighed 32 pounds.    


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Herbivore Mammals

Pygmy rabbit 
Desert cottontail 
Eastern gray squirrel 
Red squirrel 
Deer mouse
Kangaroo rat 
Meadow vole 
Mule deer 
Bighorn sheep 
American pronghorn 

Carnivore Mammals

American badger 
River otter 
Red fox 
Long-tailed weasel 
Grizzly bear 
Mountain lion   



  Long-toed salamander 
  Idaho giant salamander  
  Coeur d'Alene salamander

 Frogs and Toads  

  American bullfrog 
  Columbia spotted frog 
  Western toad 
  Northern leopard frog 
  Pacific tree frog 
  Great Basin spadefoot 



Painted turtle 
Northern alligator lizard 
Mohave black-collared lizard 
Short-horned lizard 
Desert horned lizard 
Sagebrush lizard 
Western fence lizard 
Western skink 
Side-blotched lizard 
Longnosed leopard lizard 
Western whiptail 



Western pipistrelle 
Western small-footed myotis 
Little brown bat 
Yuma myotis 
Townsend's big-eared bat 
Hoary bat 
Silver-haired bat 
Fringed myotis 
Pallid bat

Sensitive Species (not a complete list) 

Greater sage-grouse 
Pygmy rabbit 
No. Idaho ground squirrel 
So. Idaho ground squirrel
Canada lynx 
Grizzly bear 
Selkirk Mtns. woodland caribou 
Kootenai White River sturgeon 
Bull trout 
Sockeye salmon 
Chinook salmon 
Steelhead trout 
Yellow-billed cuckoo