Different shark species landed on the endangered species list at different times. Some species of critically endangered sharks include the ground shark, dogfish, and the angel shark.
Ocelots have been endangered for several decades, with populations declining due to habitat loss, poaching, and fragmentation. Conservation efforts are focused on protecting their habitats and reducing threats to help stabilize their populations.
Asian elephants have been considered endangered for several decades, with populations declining due to habitat loss, poaching, and human-wildlife conflict. Conservation efforts have been ongoing to protect these elephants and their habitats.
There are several on the watch list as being endangered in Europe. Surprisingly the Orpington, not the buff but the standard original breed is on the list. The Ixworth, Scots Grey and Marsh Daisy are all on the endangered list. In North America the list is long and includes the Buttercup, Buckeye, Hudan and Sumatra. I have provided a link for critical and endangered breeds
Sea otters have been considered endangered since the early 20th century when hunting for their fur led to a significant decline in their population. Conservation efforts have been implemented to help protect and recover sea otter populations since then.
Pangolins have been considered endangered for several decades, with the major decline in their populations observed over the past 20 years due to illegal trafficking for their scales and meat. All eight species of pangolins are currently classified as either threatened or critically endangered by the IUCN.
it has been on the endangered list for 5 years
Numbats have officially been on the endangered list since 2 December 1970.
never
since 1972
since 1972
As of August 2014, the snowy owl is not on the endangered list. It is, however, a protected species in the United States.
There are 2 species of giant rat that is on the endangered list since 1996.
since 1972
Purple elephants
The cougar is not on the endangered list. It is listed as "of least concern" since populations are quite stable. Only the Florida subspecies is listed as endangered.
They have bin endangered for 7 years so far (2015). Cheetahs were added to the endangered species list in 2008.
Since human beings started hunting them, they have been on the endangered list.