What animals are endangered the most?
Siberian Tigers and Pandas are two of the most endangered animals. Others are the Little Dodo Bird, Chinese Giant Salamander, and the Saola.
Doesn't work like that. For animal testing, you need lots of animals. And endangered animals are by definition animals that you can't get lots of. So endangered animals aren't used in animals testing. Animals used in animal testing are species like rats, rabbits, dogs, some species of monkeys. All animals that can be easily bred in captivity. And not at all endangered as a specie.
An extinctt animal cannot be endangered. Do you mean how an endangered animal becomes extinct? Endangered animals become extinct by various reasons. It depends what animal it is. Most animals are killed by humans, or habitats destroyed. E.G: Tigers have become endangered because of poaching, and if this continuses, then they will become extinct. Animals become extinct becuase of a particular reason, which makes them endangered, then if carried on, extinct.