Male woolly mammoths were about 12 feet (3.5 m) long, while the females were slightly smaller.
They had curved tusks up to 16 feet (5 m) in length and their lower abdomen boasted a coat of rough hair up to 3 feet (1 m) long.
Small ears and short tails prevented the loss of vital body heat.
Their tribes had at the end & # 39; two fingers & # 39; to help them pick grass, twigs and other vegetation.
They get their name from the Russian & # 39; mammoth & # 39 ;, or the earth mole, because the animals were believed to live underground and died in contact with light – explaining why they were always found dead and half buried.
It was believed that their bones once belonged to extinct races of giants.
Wool-haired mammoths and modern elephants are closely related and share 99.4 percent of their genes.
The two species took different evolutionary paths six million years ago, at about the same time that humans and chimpanzees went their own way.
Woolly mammoths lived with early humans, who hunted them for food and used their bones and tusks to make weapons and art.
The most commonly used technique, known as CRISPR / Cas9, enables scientists to make a hybrid animal from the preserved fossils of woolly mammoths and to fuse them with cells from a living elephant. The two species share 99.4 percent of their DNA
Extinguish the & # 39; & # 39; of the mammoth has become a realistic prospect because of revolutionary techniques for processing genes that allow the precise selection and insertion of DNA from samples frozen in millennia in Siberian ice.
The most commonly used technique, known as CRISPR / Cas9, has transformed genetic engineering since it was first demonstrated in 2012.
The system allows the & # 39; cut and paste & # 39; manipulation of strands of DNA with a precision that has not been seen before.
Using this technique, scientists were able to cut and paste cleaved mammoth DNA into Asian elephants to create an elephant-mammoth hybrid.
Mammoth wandered 140,000 years through the icy tundra of Europe and North America and disappeared at the end of the Pleistocene period, 10,000 years ago.
They are one of the best understood prehistoric animals in science, because their remains are often not fossilized but frozen and preserved.