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![Brazilian free-tailed bat, BT Hamilton, NPS](https://cpw.widen.net/content/78171588-64b0-4b4f-8465-0dfa23d9f8e7/web/Brazilian%20free-tailed%20bat%20BT%20Hamilton%20NPS%20Profile.jpg?w=480&itok=68Yug4m0)
invasive
Brazilian Free-Tailed Bat
Mammal - Tadarida brasiliensis
invasive
Brook Trout
Fish - Salvelinus fontinalis
invasive
Brown Bullhead Catfish
Fish - Ameiurus nebulosus
![Brown Creeper. USFWS.](https://cpw.widen.net/content/4f6667dd-dbf4-44d2-8ccf-a6b7a8160881/web/Brown%20Creeper%20USFWS%20Profile.jpg?w=480&itok=7n8R8gRU)
invasive
Brown Creeper
Bird - Certhia americana
invasive
Brown Trout
Fish - Salmo trutta
![Brown-headed cowbird, Mike Carlo, USFWS, PD](https://cpw.widen.net/content/afeba341-d2ac-4251-8f2c-8d106b3b8e85/web/brown-headed%20cowbird%20Mike%20Carlo%20USFWS%20PD%20Profile.jpg?w=480&itok=R3iqii4R)
invasive
Brown-headed Cowbird
Bird - Molothrus Ater
![California Kingsnake. NPS.](https://cpw.widen.net/content/3574ea4b-2dbd-4bce-9cf4-8f1de5486256/web/California%20Kingsnake%20NPS%20Profile.jpg?w=480&itok=-Jt_Zy4Y)
invasive
California Kingsnake
Reptile - Lampropeltis californiae
![California myotis, USGS, Western Ecological Research Center](https://cpw.widen.net/content/b6a05b67-ee26-4f25-8db0-3a96084763a6/web/California%20myotis%20USGS%20Western%20Ecological%20Research%20Center%20Profile.jpg?w=480&itok=6DWr23GN)
invasive
California Myotis
Mammal - Myotis californicus
![](https://cpw.widen.net/content/76a23933-8d31-4ed8-85d4-15c90a891e4a/web/goose-lewis%20Profile.jpg?w=480&itok=uaPvv_mZ)
invasive
Canada Goose
Bird - Branta canadensis
![Canyon bat, Pipistrellus hesperus, Photo BY-NC-SA Glenn and Martha Vargas on CalPhotos](https://cpw.widen.net/content/f39a44c5-2900-41cb-81b3-ed612562ad4d/web/Canyon%20bat%20Pipistrellus%20hesperus%20-%20Photo%20BY-NC-SA%20Glenn%20and%20Martha%20Vargas%20on%20CalPhotos%20Profile.jpg?w=480&itok=guC7iw93)
invasive
Canyon Bat
Mammal - Perastrellus hesperus
![Canyon Treefrog. Caitlin Ceci/NPS](https://cpw.widen.net/content/fc8974dc-c799-4618-b591-4614a2fefa27/web/Canyon%20Treefrog%20Caitlin%20Ceci%20NPS_Profile.jpg?w=480&itok=exQaPNGF)
invasive
Canyon Treefrog
Amphibian - Hyla arenicolor
![This species needs a photo.](https://cpw.widen.net/content/4c3f462c-9cb0-4b0b-a3e8-2e3dd11a0592/web/This%20species%20needs%20a%20photo.png?w=480&itok=vGa_A6Rk)
invasive
Causey’s Crayfish
Crustacean - Orconectes causeyi
invasive
Channel Catfish
Fish - Ictalurus punctatus
![Chihuahuan Nightsnake. Mike Swink/NPS.](https://cpw.widen.net/content/fc0f0f46-c6e3-43f9-a42c-a8bdf602a19d/web/Chihuahuan%20Nightsnake%20Mike%20Swink%20NPS%20Profile.jpg?w=480&itok=magPp_hv)
invasive
Chihuahuan Nightsnake and Desert Nightsnake
Reptile - Hypsiglena jani and Hypsiglena chlorophaea