It is thought that giant pandas never developed these visual accessories due in part to their habitat and solitary nature.
Giant pandas live in dense, fog-enshrouded stands of bamboo that obstruct a direct line of sight and any potential visual communications.
Males are larger than females, weighing up to 250 pounds (113 kilograms) in the wild. Giant pandas live in a few mountain ranges in central China, in Sichuan, Shaanxi and Gansu provinces.
They once lived in lowland areas, but farming, forest clearing and other development now restrict giant pandas to the mountains.
The panda house, an indoor viewing area, is open to visitors from 9 a.m. Please note that all of the Zoo's animals have the option to enjoy some time away from the crowds.Giant pandas do occasionally vocalize when playing.During mating, they become very vocal, relying on extremely detailed vocalizations to express all shades of mood from amorous to angry.Most of their communication is accomplished through scent marking throughout their habitat and territory.Giant pandas mark their territory by rubbing secretions from their anal glands onto tree trunks, rocks or the ground, usually along paths that they habitually tread.Scent marking alerts giant pandas in the vicinity to one another.Depending on who reads the mark, the scents may either separate giant pandas or help bring them together.For the safety of our visitors, the use of tripods is prohibited.The giant panda, a black-and-white bear, has a body typical of bears.Giant pandas do not exhibit body characteristics that communicate visual signals. Their tails are stubs and therefore cannot flag signals to other giant pandas.They have no crest or mane to erect, and their ears are not flexible enough to cock forward or flatten.