Why Did Crocodiles Survive the K/T Extinction? For evidence, the world today seems to be worse than it was in the past 70 years where crocs and alligators were virtualy depleted or wiped out from their natural habitats. If alligators and crocs went extinct, the world would have been a better place. What would happen if snakes were to become extinct? Nineteen of the world's most critically endangered crocodiles were released Thursday into the wild in the Philippines as part of efforts to save the species from extinction, conservationists said. 10 Most Dangerous Animals Who Are Now Completely Extinct Now a day, man seems to be the most dangerous animals of all but there was a time when the earth was filled with some of the most terrifying animals. Crocs are not dinosaurs, and I am not sure where you got the ‘survivor from the Jurassic’ bit from either, the species is only 4 million years old. Nineteen of the world's most critically endangered crocodiles were released Thursday into the wild in the Philippines as part of efforts to save the species from extinction, conservationists said. In the past, lots of American crocodiles were killed so that their skins could be made into shoes and other clothing. They even have a list of candidates, which includes the … Why It Matters When Species Go Extinct Animal extinction can effect entire ecosystems and in turn the world. Alligators and Crocodiles. They were never extinct, but they were almost; in the 19th century and early 20th century, they almost died out completely, but then it was declared illegal to hunt them down in America. If crocodiles went extinct the food they presently eat would be used by whatever animal they presently compete with for that food. Wiki User May 21, 2012 5:47PM. ... How Does Extinction Happen? 1 The Giant Sloth. ... 10 Most Dangerous Animals Who Are Now Completely Extinct. Learn more about Threatened and Endangered Species. This crocodile is now an endangered species. Share Flipboard Email Print ... Crocodiles Were Smarter Than Dinosaurs . If alligators and crocs went extinct, the world would have been a better place. Nineteen of the world's most critically endangered crocodiles were released Thursday into the wild in the Philippines as part of efforts to save the species from extinction, conservationists said. It’s certainly a fanciful notion, but not altogether impossible, after all if an alien visited Earth in the aftermath of the K/T (Cretaceous/Tertiary) extinction could they have foreseen the evolution of humans from small tiny mammals that mostly resembled modern shrews? If the snake went extinct, there'll only be 3 reptiles left. Nineteen of the world's most critically endangered crocodiles were released Thursday into the wild in the Philippines as part of efforts to save the species from extinction, conservationists said. Share Flipboard Email Print ... threatening their survival and increasing numbers of insects like mosquitos that the songbirds were meant to control. Aphids Myrmecophilous (ant-loving) caterpillars of the family Lycaenidae (e.g., blues, coppers, or hairstreaks) are herded by the ants, led to feeding areas in the daytime, and brought inside the ants' nest at night. For evidence, the world today seems to be worse than it was in the past 70 years where crocs and alligators were virtualy depleted or wiped out from their natural habitats. ... For reptile, it includes lizards, snakes, turtles and crocodiles. If the dinosaurs had never died out, then could one of them have possibly evolved sentient like intelligence similar to us? Scientists these days are serious about bringing animals extinct millions of years ago back to life.