Giant Panda Chicks: At the time of birth smaller than Rat(Mouse) in weight usually 100 to 200 grams. Pandas' favorite food bamboo shoots on the street. Adult pandas eat about 12–42 kilos of bamboos per day.
The giant panda’s solitary nature is underscored by its reliance on its sense of smell (olfaction). Each animal confines its activities to a range of about 4 to 6 square km (1.5 to 2.3 square miles), but these home ranges often overlap substantially. Under this arrangement scent functions in regulating contact between individuals. A large scent gland located just below the tail and surrounding the anus is used to leave olfactory messages for other pandas. The gland is rubbed against trees, rocks, and clumps of grass, with scent conveying information on identity, sex, and possibly social status of the marking individual.
Chemical analysis of marks is consistent with a difference in function for males and females. Males appear to use scent to identify the areas where they live, whereas females primarily use it for signaling estrus. Except for the mothers’ care of infants, the only social activity of pandas takes place during females’ estrus, which occurs annually during the spring and lasts one to three days. A spring mating season (March-May) and a fall birth season (August–September) are seen in both wild and captive populations. Males appear to locate females first by scent and ultimately by vocalizations. Assemblages of one to five males per female have been recorded. At this time males may become highly aggressive as they compete for the opportunity to mate.