What species caused the most extinctions?

Cats are number one—the number one invasive killer of species around the world. According to research published this month in the Proceedings of the National Academy of Sciences, feral cats can be blamed for 63 modern-day extinctions.

What animals destroy the earth?

Overpopulation can threaten our biodiversity. Just ask the Argentinians, whose country is being overrun by beavers!

• Australia: Kangaroos.
• China: Dogs.
• United States: White tailed deer.
• Worldwide: Jellyfish.
• England: Badgers.
• Canada: Cats.
• South Africa: Elephants.
• Argentina: Beavers.

What were the big 5 mass extinctions?

Sea-level falls are associated with most of the mass extinctions, including all of the “Big Five”—End-Ordovician, Late Devonian, End-Permian, End-Triassic, and End-Cretaceous.

What species are likely to go extinct?

Species Directory

Common name	Scientific name	Conservation status ↓
Eastern Lowland Gorilla	Gorilla beringei graueri	Critically Endangered
Hawksbill Turtle	Eretmochelys imbricata	Critically Endangered
Javan Rhino	Rhinoceros sondaicus	Critically Endangered
Orangutan	Pongo abelii, Pongo pygmaeus	Critically Endangered

What animals have no purpose?

4 bugs that serve no purpose on this planet

• Mosquitos. Mosquitoes are such a nuisance.
• Wasps. Our environment would suffer if we lost bees, for obvious reasons (e.g. no agriculture, no honey).
• Gnats. Heck, we’d even weep for alleys and garbage cans that have a swarm of gnats surrounding them too.
• Moths.

What ended the Jurassic period?

145 million years ago
Jurassic/Ended