1The passenger pigeon is an extinct species that once inhabited North America in vast numbers.
2Is the Amur leopard still extinct in the wild, or have there been recent sightings?
3Climate change has pushed several plant species to the brink of extinction, with many more at risk.
4Try to avoid using products made from materials that come from extinct or endangered species.
5The discovery of a well-preserved fossil of an extinct dinosaur has shed new light on its behavior and habitat.