A little animal, a native of Australia, is the main character of the great scientific mystery.
How can viruses called wombats or vombatids be able to eat cubes?
It's about only known species that produce stools of these sizes, and this is done in significant quantities.
The uterus may fall apart 100 cubesthat stacks in mounds to mark territory.
Although these animals have round-years as other mammals, they do not produce stools in balls or in soft piles.
A group of scientists in the United States says that the cause of the strange cubes of the uterus is in the particular characteristics of their gut.
"The first thing that made me learn this is that I have never seen anything so odd in biology, it was a mystery," he said. Patricia Yan, postgraduate researcher in engineering at the Technical Institute of Technology in Georgia, USA.
Yang and his colleagues studied the digestive tracts of the uterus slaughtered after a collision with vehicles in Tasmania.
"We began enthusiastically to dissect the intestines of animals as if it were a Christmas present," he told the BBC David Hu, another researcher.
Scientists compare the gut of the warts with those of the pigs and insert expanding balloons into the digestive tract of the animals to measure their elasticity.
In the case of the uterus, stools change from a liquid state to a solid state in the last 25% of the intestine. And in the last 8% of the intestinal tract, scientists found a large one change in elasticity,
This is the variable elasticity of the intestinal walls, which explains the formation of stool cubes about two centimeters on each side.
The cubes allow the uterus to collect its chairs effectively not only to mark the territory, but also to communicate and attract other warriors.
"We currently have only two cubes, molding or chopping methods," said Yang.
The study could help in the future to apply a method similar to that of the uterus manufacturing processesto produce soft cubes instead of molding them. "
Young and his colleagues presented their findings at the annual meeting of the Physical Dynamics Division of the American Physical Society, which took place this week in Atlanta.
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