Endangered species

Critically endangered

The Siberian Tiger is a subspecies of tiger that are critically endangered. 3 subspecies of tiger are already extinct.

The Island Fox (Urocyon littoralis) is a small fox that is native to six of the eight Channel Islands of California. It is the smallest fox species in the United States. There are six subspecies of the fox, each unique to the island it inhabits, reflecting its evolutionary history. Other names for the Island Fox include Coast Fox, Short-Tailed Fox, Island Gray Fox, Channel Islands Fox, Channel Islands Gray Fox, California Channel Island Fox and Insular Gray Fox.

The sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean. Adult sea otters typically weigh between 14 and 45 kg (30 to 100 lb), making them the heaviest members of the weasel family, but among the smallest marine mammals.

The American bison (Bison bison) is a bovine mammal, also commonly known as the American buffalo. 'Buffalo' is something of a misnomer for this animal as it is only distantly related to either of the two "true buffaloes", the water buffalo and the African buffalo.

The California Condor (Gymnogyps californianus) is a species of North American bird in the New World vulture family Cathartidae. Currently, this condor inhabits only the Grand Canyon area and western coastal mountains of California and northern Baja California. Although other fossil members are known, it is the only surviving member of the genus Gymnogyps.

The Loggerhead Sea Turtle (Caretta caretta) is a sea turtle and the only member of the genus Caretta. The genus name "Caretta" is a latinization of the French "caret", meaning turtle, tortoise, or sea turtle[1]. A loggerhead sea turtle reportedly grows up to 800 lbs (364 kg) and 3.5 feet long.

Asian arowana refers to several varieties of freshwater fish in the genus Scleropages.

The 'Santa Cruz Long-toed Salamander' is an endangered subspecies of the Long-toed Salamander, which is found only close to a few isolated ponds in Santa Cruz County and Monterey County, California.

Rare species
A rare species is an organism which is very uncommon or scarce. This designation may be applied to either a plant or animal taxon, and may be distinct from the term "endangered" or "threatened species". Designation of a rare species may be made by an official body such as a national government, state or province. However, the term is used more commonly without reference to a specific criteria. The IUCN does not normally make such designations but may use the term in its scientific discussions.

The concept of rarity is established from having a very small number of organisms worldwide, usually a number less than 10,000; however, the concept is also influenced by having a very narrow endemic range and/or fragmented habitat

A species may be endangered or vulnerable, but not considered rare if, for example, it has a large, dispersed population but its numbers are declining rapidly or predicted to so. Rare species are generally considered threatened simply because the inability of small population sizes to recover from stochastic events, and the potential for a rapid decline in population.

.