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2 days ago · The new finding, published April 10 in the journal The Anatomical Record, dispels the belief that puppy dog eyes are the product of domestication. And it debunks a 2019 study hypothesizing that ...
1 day ago · The coyote ( Canis latrans ), also known as the American jackal, prairie wolf, or brush wolf is a species of canine native to North America. It is smaller than its close relative, the gray wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecological niche as the golden jackal does in ...
5 days ago · dolphin, any of the toothed whales belonging to the mammal family Delphinidae (oceanic dolphins) as well as the families Platanistidae and Iniidae, the two that contain the river dolphins. Of the nearly 40 species of dolphins in the Delphinidae, 6 are commonly called whales, including the killer whale and the pilot whales.
- The Editors of Encyclopaedia Britannica
5 days ago · A slender fox-faced animal that hunted at night for wallabies and birds, the thylacine was 100 to 130 cm (39 to 51 inches) long, including its 50- to 65-cm (20- to 26-inch) tail. Its weight ranged from 15 to 30 kg (33 to 66 pounds), but about 25 kg (about 55 pounds) was average.
- The Editors of Encyclopaedia Britannica
- What is a thylacine?The thylacine was a slender fox-faced animal that originally inhabited the Australian mainland, New Guinea, and Tasmania. It is now extinct. It was...
- Where were thylacines found?Thylacines lived in Tasmania, New Guinea, and mainland Australia. They ranged over grasslands, wetlands, and dry eucalyptus forests.
- Why is the thylacine extinct?Competition with the dingo probably led to the thylacine’s disappearance from mainland Australia. It was widely hunted in Tasmania by European sett...
- What did thylacines eat?Thylacines were carnivorous marsupials. They ate kangaroos, birds, and small rodents. When European settlers arrived, thylacines also ate poultry a...
5 days ago · A mutation is a heritable change in the genetic material of an individual. The change can be large or small. Large changes involve the loss, addition, duplication, or rearrangement of whole chromosome s or chromosome segments. The smallest changes, called point mutations, alter only a single base. The effect of a mutation depends on its size ...
2 days ago · Elephant. Elephants are the largest living land animals. Three living species are currently recognised: the African bush elephant ( Loxodonta africana ), the African forest elephant ( L. cyclotis ), and the Asian elephant ( Elephas maximus ). They are the only surviving members of the family Elephantidae and the order Proboscidea; extinct ...
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