CHANGSHA, July 15 (Xinhua) -- Guoguo, an elk cub, was only five days old when it was found dying in the grass around an embankment of Dongting Lake, the second-largest freshwater lake in central China, days ago.

Continuous downpours have caused water levels to rise in major rivers and lakes in many parts of the country since the flood season started, posing a threat not only to people's lives and property, but also to wild animals.

On July 5, Yang Xiaoqiang, a worker at the Dongting Lake nature reserve administration in Hunan Province, received a phone call from a local resident, reporting the situation of the cub. Yang rushed to the site and brought the elk back to a local elk and bird rescue center. The starving cub drank three bottles of fresh milk quickly.

"It's a young male deer who might lose its mother because of the floods," Yang said.

Elks once lived in the marshes in the middle and lower reaches of the Yangtze River, and became extinct during the late Qing Dynasty (1644-1911) due to climate change and human activities. It was not until the 1980s that the Chinese government began importing the species from overseas, and the population of elks in the region of Dongting Lake has now increased to over 200.

"The habitat of elks would be inundated, and food would be difficult to find during the flood season," said Song Yucheng, an elk protection expert with the administration.

"It would have been a "survival of the fittest" approach. However, considering the very small population of elks, we have been taking actions to help the species make it through the flood season without affecting their natural habitat," Song added.

Ding Ming, a volunteer with an elk protection association, often brings food, including cabbages and carrots, to locate and feed trapped wildlife around the lake.

"I was born and grew up here, and I know every branch of the lake, as well as the location of the elks," said Ding, who usually spends a week around the lake during the flood season, and guides the deer to safe highlands to escape the flooding.

Apart from elks, the rescue center also received two night herons.

"Night herons are summer migratory birds that nest at a low location. The floods engulfed their nests, so the young birds can't find fish or shrimp, and may eventually die from lack of food and exhaustion," said Li Zheng, who is in charge of the rescue center.

There are 14 injured or trapped elks living in the center, and they will be released back to nature after recovery, according to Li.