"Animal extinction" means the complete disappearance or dying out of a certain species of animals, with no more of its kind left on Earth. Full definition
The designer took up a big challenge in conveying the alarming trend of animal extinction throughout the globe. (dotearth.blogs.nytimes.com)
Then overpopulation make us to take land from animals, let animals extinction. (dotearth.blogs.nytimes.com)
«How fear alone can cause animal extinction: Even the smell of a predator can have disastrous effects in populations of small size.» (sciencedaily.com)