The Desert tortoise (Gopherus agassizii), is a species of tortoise native to the southwestern United States and northwestern Mexico. Desert tortoises grow slowly and live about 50 to 80 years. They can tolerate water, salt, and energy imbalances on...
The San Francisco garter snake (Thamnophis sirtalis tetrataenia ) is a slender multi-colored subspecies of the common garter snake. Designated as an endangered subspecies since the year 1967, it is endemic to San Mateo County and the extreme...
The Sierra Nevada bighorn sheep (Ovis canadensis sierrae ) is subspecies of bighorn sheep unique to the Sierra Nevada mountains of California. A 2016 genetics study confirmed significant divergence between the three subspecies of North America's...
The salt marsh harvest mouse (Reithrodontomys raviventris ), also known as the red-bellied harvest mouse, is an endangered rodent endemic to the San Francisco Bay Area salt marshes in California. The two distinct subspecies are both endangered and...
The endangered San Joaquin kit fox (Vulpes macrotis mutica ) was formerly very common in the San Joaquin Valley and through much of Central California. Its 1990 population was estimated to be 7,000. This subspecies is still endangered, after nearly...
The giant kangaroo rat (Dipodomys ingens ) is an endangered species of heteromyid rodent endemic to California.
The Pacific pocket mouse, Perognathus longimembris pacificus, is endemic to California. It lives in sandy coastal soils of the coastal sage scrub ecoregion. It eats seeds and some insects. It was believed to be extinct until 1993, when a small...
The California least tern, Sternula antillarum browni, is a subspecies of least tern that breeds primarily in bays of the Pacific Ocean within a very limited range of Southern California, in San Francisco Bay and in northern regions of Mexico. This...
Oryzomys peninsulae, also known as the Lower California rice rat, is a species of rodent from western Mexico. Restricted to the southern tip of the Baja California peninsula, it is a member of the genus Oryzomys of family Cricetidae. Only about...
Perrin's beaked whale (Mesoplodon perrini ) is part of the toothed whale suborder and is one of over 90 known cetaceans in existence today. Beaked whales are part of the family Ziphiidae, which are the second most diverse group out of all marine...
The San Joaquin antelope squirrel or Nelson's antelope squirrel (Ammospermophilus nelsoni ), is a species of antelope squirrel, in the San Joaquin Valley of the U.S. state of California.
The devil fish or giant devil ray (Mobula mobular) is a species of ray in the family Mobulidae. It is currently listed as endangered, mostly due to bycatch mortality in unrelated fisheries.
Gambelia sila, commonly known as the blunt-nosed leopard lizard, is a species of lizard in the family Crotaphytidae. The species is endemic to southern California.
The scalloped hammerhead (Sphyrna lewini) is a species of hammerhead shark in the family Sphyrnidae. It was originally known as Zygaena lewini. The Greek word sphyrna translates into "hammer" in English, referring to the shape of this shark's head,...
The San Clemente loggerhead shrike (Lanius ludovicianus mearnsi ) or San Clemente Island loggerhead shrike is a subspecies of the loggerhead shrike that is endemic to San Clemente Island, California.
The Coachella Valley fringe-toed lizard (Uma inornata ) is a species of phrynosomatid lizard.
The Tipton kangaroo rat (Dipodomys nitratoides nitratoides ), is a subspecies of the San Joaquin kangaroo rat, a rodent in the family Heteromyidae.
The giant sea bass (Stereolepis gigas) is a fish native to the North Pacific Ocean. Although commonly referred to as a giant sea bass, black sea bass or giant black sea bass, it is actually a wreckfish in the family Polyprionidae rather than in the...
The San Bernardino kangaroo rat (Dipodomys merriami parvus ) is a species of rodent in the family Heteromyidae. It is one of 19 recognized subspecies of Merriam's kangaroo rat (Dipodomys merriami ) that are spread throughout the arid regions of the...
The San José Island kangaroo rat (Dipodomys merriami insularis ) is a subspecies of rodent in the family Heteromyidae. It is endemic to Mexico, where it is found only on San José Island off the east coast of Baja California Sur. (Dipodomys merriami...
Bombus suckleyi is a species of bumblebee known commonly as Suckley's cuckoo bumblebee, named after biologist George Suckley. Suckley's bumble bee is a generalist pollinator and represents a rare group of obligate, parasitic bumble bees (cuckoo...
