Abstract: The behavioral patterns of animals are affected by genetic factors, environmental factors and others. In February to June of 2018, In order to explore how the genes and environment impact on the giant pandas’ behavioral patterns, an observation experiment performed in Chengdu Giant Panda Breeding Research Base. Samples of the observation experiment were different types of ten panda cubs, including singletons, identical twins and fraternal twins. The experiment adopted the focus animal sampling and each cub individual has been observed twice a day during the experiment. The results showed that: (1) For all examples, resting is a main behavior, accounting for 58.9%, feeding accounts for 21.1%, locomotion for 4.0%, object playing for 0.6%, self-motion playing for 6.7%, reciprocal play fighting for 7.0%, parent-child playing for 1.7%. (2) Comparing with an individual panda of twins, a singleton visibly cost more time on resting and self-motion playing, accounting for 77.4% and 7.7%. (3) Differences showed from identical twins and fraternal twins. Identical twins act more than fraternal twins do resting, object playing, self-motion playing, and act less actions about feeding, locomotion, reciprocal play fighting and parent-child playing. Therefore, the three types of giant panda individuals had a certain degree of difference in behavioral patterns, and this difference may be influenced or influenced by their genetic factors.

Key words: animal behavior, genetic factor, captive giant pandas, the twins, behavior patterns