The International Union for Conservation of Nature lists the panda on its Red List of Threatened Species. As of 2015, there are approximately 1,800 pandas living in the wild, according to the World Wildlife Fund. Pandas have lived as long as 35 years in captivity, and scientific observation indicates that their lifespan is shorter in the wild.
Bamboo comprises an estimated 99 percent of the panda's diet, and pandas spend 10 to 16 hours a day searching for and eating this food source. Their daily nutritional requirement requires consumption of a range of 26 to 84 pounds of bamboo. Wild pandas receive most of their water from bamboo, and when necessary, they will drink fresh river water.
Female giant pandas ovulate only once a year, resulting in a very slow breeding rate. Even under the best of conditions, a mother will give birth only once every other year. Giant pandas are able to begin reproduction around 4 to 8 years of age, and researches have observed them to remain fertile until around the age of 20.
Panda babies, or cubs, are born blind. Unlike most animals, cubs cannot move without support until around 3 months of age, and they remain dependent until they are 2 years old.