As the lungs researchers found that the animal never breathed and apparently was born dead.
The man found the stillborn fawns in May 2016 near Freeburg, Minnesota, about a mile from the Mississippi River. According to the new study, this discovery marks the first documented case of two-headed white-tailed deer twins brought to full term and birthed. "It is awesome and incredibly rare".
A mushroom hunter's discovery of a conjoined white-tailed fawn in a Minnesota forest two years ago is being hailed by researchers as a landmark case among oddities in nature. The hunter known as the Minnesota Department of Natural Resources, in which D'Angelo was functioning at the moment.
Researchers not only ran a Complete necropsy, but did a 3D they revealed that the fawns - that were does - had two individual necks and heads, but they shared with a body. "Of the tens of millions of fawns born annually in the USA, there are probably abnormalities happening in the wild we don't even know about", D'Angelo said in a press statement.
"It's unbelievable and extremely rare", study author Gino D'Angelo, assistant professor of deer ecology and management at the University of Georgia, told The Independent.
The two-headed deer found in Minnesota is an extremely rare specimen not only among its species but also among other species.
The twins had normal heads, fur and legs, as well as "almost perfect" spots running up their necks.
They had two hearts, which shared a pericardial sac - the outer layer of a heart.
D'Angelo said, "Their anatomy indicates the fawns would never have been viable".
The fact that it was clean and was in a natural position suggested that the doe tried desperately to keep the fawns alive and tried to care for them after delivery.
In order to perform a necropsy on the body of the fawns, the remains were frozen to keep them in good condition. "The maternal instinct is very strong", D'Angelo added.
Among domestic wildlife, only 19 cases of conjoined twins were found between 1671 and 2006, D'Angelo said.
"Animals that are stillborn, they don't last long on the landscape because of scavengers", said Cornicelli.
After the study wrapped up, the twins were preserved by Robert Utne and taxidermist Jessica Brooks to create a realistic display.