Nearly seven in 10 adults in the US are under-informed about endangered animals, a new survey reveals. A poll of 2,000 Americans found that 68% of them are not “very informed” about which ...

Mammals are one of the most widely known animal species, with over 5,000 species – including humans – identified on Earth, according to The National Wildlife Federation.

Researchers have discovered the only known animal that does not need oxygen to survive, a common parasite that largely preys on salmon. The study, published Tuesday in the journal Proceedings of ...

That's because H. salminicola is the only known animal on Earth that does not breathe. If you spent your entire life infecting the dense muscle tissues of fish and underwater worms, ...

Biologists say these are the oldest known animals — and not sea sponges as previously believed — meaning we’re actually descended from these things. And most remarkable of all, as a living ...