Poachers are hunting them when they aren't suppose to and the animals become endangered
Humans are the main reason that puma is endangered species. As a species, the puma is not an endangered species. Only the Florida race is endangered.
Yes, polar bears are listed as Threatened on the main endangered species lists. See the related question below for more information about their listing and status.
Some species that are not endangered are fish, sharks, and most insects. Also, the main species of this planet, humans.
Habitat loss threatens the jaguar, but this species is not an endangered species, rather listed as near threatened.
The gray wolf is not an endangered species. Listed as least concern by the IUCN.
one of the main cause is the killing of species for their valuable skins, bones etc the main cause for the endangerment of plant species is the cutting of trees for medicines and cutting of large trees to satisfy humans luxurious wants
The main one I know of (and am most familiar with) is CITES - the Convention on the International Trade in Endangered Species.
Not all penguin species are endangered. Human actions and environmental changes have endangered many penguin species. For example, humans have hunted penguins for oil and polluted their habitats.
According to the Red List of endangered wildlife, over a thousand bird species around the world are threatened with extinction. The main reason for birds becoming extinct is believed to be loss of habitat.
They are endangered due to their current population and rate it is either increasing or decrease Main cause for some species like Antarctic Minke whale is due to hunting and many whales before were hunted to the brink to extinction but some able to recover after commercial whaling ban. Main cause is Whaling but Whales do die from ship collisions and occasionally from military tests in the oceans.
The main threats to the species are hunting for its fur and the pet trade and habitat loss due to deforestation. The margay does not adapt well to human disturbance, and is almost extinct in the northern parts of its range. Hunting has decreased significantly due to international protection, but illegal harvesting still occurs locally.
Big horned sheep are not considered endangered. There are multiple species of big horned sheep, with some populations facing challenges due to habitat loss and disease, but overall they are not currently classified as endangered. Conservation efforts are in place to help protect and maintain healthy populations of big horned sheep.