Animals
| Category | Group | Common Name | Genus | Species |
|---|---|---|---|---|
| Reptile | Lizards | Granite Night Lizard | Xantusia | henshawi |
| Reptile | Lizards | Granite Spiny Lizard | Sceloporus | orcutti |
| Bird | Sparrows | Grasshopper Sparrow | Ammodramus | savannarum |
| Bird | Flycatchers | Gray Flycatcher | Empidonax | wrightii |
| Mammal (Medium) | Canines | Gray Fox | Urocyon | cinereoargenteus |
| Bird | Jays, Crow, and Raven | Gray Jay | Perisoreus | canadensis |
| Bird | Vireos | Gray Vireo | Vireo | vicinior |
| Bird | Finches | Gray-Crowned Rosy-Finch | Leucosticte | tephrocotis |
| Mammal (Small) | Mice and Rats | Great Basin Pocket Mouse | Perognathus | parvus |
| Amphibian | Toads | Great Basin Spadefoot | Spea | intermontana |
| Bird | Waders | Great Blue Heron | Ardea | herodias |
| Bird | Waders | Great Egret | Ardea | alba |
| Bird | Owls and Nightjars | Great Gray Owl | Strix | nebulosa |
| Bird | Owls and Nightjars | Great Horned Owl | Bubo | virginianus |
| Amphibian | Toads | Great Plains Toad | Anaxyrus | cognatus |
| Bird | Starlings | Great-Tailed Grackle | Quiscalus | mexicanus |
| Bird | Cuckoos | Greater Roadrunner | Geococcyx | californianus |
| Bird | Gallinaceous Birds | Greater Sage-Grouse | Centrocercus | urophasianus |
| Bird | Waterbird | Greater Scaup | Aythya | marila |
| Bird | Waterbird | Greater White-Fronted Goose | Anser | albifrons |
| Bird | Shorebirds | Greater Yellowlegs | Tringa | melanoleuca |
| Bird | Grebes | Grebe | ||
| Bird | Waders | Green Heron | Butorides | virescens |
| Bird | Towhees | Green-Tailed Towhee | Pipilo | chlorurus |
| Bird | Waterbird | Green-Winged Teal | Anas | crecca |
| Bird | Grosbeaks and Bunting | Grosbeak | ||
| Bird | Gallinaceous Birds | Grouse | ||
| Mammal (Large) | Seals and Sea-Lions | Guadalupe Fur-Seal | Arctocephalus | townsendi |
| Bird | Gulls and Terns | Gull | ||
| Bird | Gulls and Terns | Gull-Billed Tern | Gelochelidon | nilotica |
| Bird | Woodpeckers | Hairy Woodpecker | Picoides | villosus |
| Bird | Flycatchers | Hammond's Flycatcher | Empidonax | hammondii |
| Mammal (Large) | Seals and Sea-Lions | Harbor Seal | Phoca | vitulina |
| Bird | Waterbird | Harlequin Duck | Histrionicus | histrionicus |
| Bird | Raptors | Harris' S Hawk | Parabuteo | unicinctus |
| Bird | Sparrows | Harris's Sparrow | Zonotrichia | querula |
| Bird | Raptors | Hawk | ||
| Mammal (Small) | Voles, Muskrat, and Lemmings | Heather Vole | Phenacomys | intermedius |
| Bird | Gulls and Terns | Heermann's Gull | Larus | heermanni |
| Mammal (Small) | Mice and Rats | Heermann's Kangaroo Rat | Dipodomys | heermanni |
| Amphibian | Salamanders | Hell Hollow Slender Salamander | Batrachoseps | diabolicus |
| Bird | Thrushes | Hermit Thrush | Catharus | guttatus |
| Bird | Warblers | Hermit Warbler | Setophaga | occidentalis |
| Bird | Gulls and Terns | Herring Gull | Larus | argentatus |
| Mammal (Large) | Goats and Sheep | Himalayan Tahr | Hemitragus | jemlahicus |
| Mammal (Small) | Mice and Rats | Hispid Cotton Rat | Sigmodon | hispidus |
| Mammal (Small) | Bats | Hoary Bat | Lasiurus | cinereus |
| Bird | Waterbird | Hooded Merganser | Lophodytes | cucullatus |
| Bird | Orioles | Hooded Oriole | Icterus | cucullatus |
| Bird | Grebes | Horned Grebe | Podiceps | auritus |