据科研人员统计发现，大熊猫的妊娠期是83天～200天。但大熊猫的妊娠期和人类的妊娠期是不一样的。人类的受精卵从着床到生产这段时间叫妊娠期。大熊猫的受精卵从着床到生产只有1.5~2个月的时间，但配种完成到生产有4个月的时间。那么前面的这段时间发生了什么？有研究大熊猫的专家认为，大熊猫的妊娠期可以划分为两个阶段。第一个阶段叫滞育期，时间是配种完成到受精卵着床前。第二个阶段叫妊娠期，时间是受精卵着床以后到生产。但是，这个问题现在在科学界一直存在争议，还没有统一的解答。

How long is the giant panda gestation period ?

Research statistics show that giant panda gestation lasts about 83~200 days. A giant panda pregnancy is markedly different from that of a human being. In humans, the period from the implantation of fertilized eggs to giving birth is called pregnancy. But research has found that the same biological process in giant pandas only takes 1.5-2 months. Since the entire process from pregnancy to breeding takes four months, what happens in the previous period? Some giant panda experts speculate that a giant panda’s gestation takes place in two stages. The first stage is called embryonic diapause, or delayed implantation. The period between implantation and birth is called pregnancy, But there are still debates on the length of giant panda gestation and there is no formal consensus as of yet.