Doosans are the most abundant bear species in North America, with about 70,000 individuals, according to the U.S. Geological Survey.
But the bears are also considered vulnerable due to habitat loss, habitat fragmentation and the need to hunt for food.
The bears are known to prey on other bears, and many bear populations are found on remote Indian reservations.
In recent years, a number of captive-bred Doosannas were released into the wild, which resulted in a surge in bear numbers, according a study by the American Museum of Natural History.
While captive-breeding is the only way to increase the population of a species, captive-rearing can also be detrimental to the animals’ health and reproductive success.
This is because captive-bearing bears are kept in small cages, often with limited access to natural sunlight.
Some bears are housed with only one to two adults.
These bears are typically confined to small, dark, well-lit enclosures.
This makes them more susceptible to stress and illness.
In fact, some bear populations have been reported to have higher mortality rates than their wild counterparts.
One study found that a group of captive bred Doosanoas housed in a Minnesota zoo were more likely to die of stress than wild-caught, wild-born bears.
Another study found the same result.
If captive-caring is not sustainable for Doosanas, the bears need to eat more, according Toomas Jonsson, a professor at the University of Copenhagen.
While this could be achieved through increased food availability, the problem is that captive-feeding bears may also lead to problems for the health of the animals themselves.
Doosanias can eat about 10 to 15 times more food than wild populations, according Jonsonsson.
And Doosanes tend to have a shorter life span.
They are more likely than wild bears to die in their early twenties.
If Doosana populations are not kept as small, they could end up being more stressed.
Toomas and his colleagues analyzed the nutritional status of Doosanna bears at the Minnesota Zoo, where captive-breedings have been in operation for years.
The team collected nutritional data from nearly 3,000 Doosanos, and compared them to those of wild-bred bears.
Dooans were fed about the same amount of meat and fruit as wild-breeds.
But Doosanners had higher levels of cholesterol, fat and calories compared to wild-raised Doos, as well as higher levels that were high in vitamin D. The researchers then compared these data to those from captive-raised animals.
They found that Doosones had higher concentrations of iron, copper, vitamin D and zinc compared to the wild-collected animals.
This suggests that Dooanas are not only more sensitive to stress, but they are also more vulnerable to disease.
But Isabella Doosane, an assistant professor of anthropology at the Uppsala University in Sweden, said that it is important to understand how the bears’ nutritional needs differ from wild-bears to avoid the potential pitfalls of captive breeding.
“If you look at the nutritional needs of wild bears, they are much lower in fat and protein, whereas Doosians are more high in calories, and they have higher cholesterol and cholesterol-lowering drugs,” said Isabella.
She said it may be important to keep in mind that the food that is consumed by Doosens are different from those eaten by other bears.
“The diet of the wild animals is not as well balanced as that of the captive animals,” she said.
It is also important to consider whether Doosas need to be confined in small enclosures, rather than in larger, more open cages.
And if captive-care is not feasible, the researchers suggest that Doozan bears be placed in small groups.
This may be difficult to do in a zoo setting, as the animals are not socialized.
In a recent study, the scientists found that captive bred bears and wild-coated bears were able to live together for a year.
It’s important to realize that the animals can adapt to their environments.
“When it comes to adapting to their environment, Doosenes are not adapted to living in small cubs, or confined in tiny cages, as wild animals,” said Jonson.
Doosaans are also less likely to reproduce in captivity, according Isabella, so there may be an opportunity to create a new population of captive Doosinas.
“It is very important that captive breeders and zoo breeders understand that the Doosanic species is one of the best examples of domestication in nature,” said Doosena.
“So we need to use that knowledge and understand how to manage the captive populations,” she added.
Isabella is the author of the book, “Captive-bred animals in the wild: How to manage them safely,” which is available online.
The National Geographic Society is also actively working to