19145 Dinosaurs are now extinct. CK 1 1073457 Dinosaurs became extinct a very long time ago. CK 1 65893 Some wild animals are on the verge of extinction. CM 1 238459 Unless whales are protected, they will become extinct. CM 1 463156 They are in danger of extinction. lukaszpp 1248757 The dodo is an already extinct species. alec 1611123 Once a species goes extinct, it's gone forever. Spamster 274867 Many species of insects are on the verge of extinction. CM 24490 Many animals that lived thousands of years ago are now extinct. CK 239041 It was during the ice age that the saber-toothed tiger became extinct. CK 277162 Global climatic changes may have been responsible for the extinction of the dinosaurs. CK