Musk turtles grow slowly because of their small size in adulthood. They are born about 1-2 cm, and can only grow by about 0.3 cm every month. It takes 6-8 months to grow to 4 cm.

But musk turtles grow at different rates depending on the environment in which they live and the way they are raised. If they live in a comfortable environment and have enough food and nutrition at ordinary times, they may only need 6 months to grow to 4 cm. If they live in a polluted environment or in an environment where food is scarce, it will take them about 8 months to grow to 4 cm.

It usually takes 4-9 years for musk turtles to mature, and the specific adult time should be judged according to their living environment and gender. Generally speaking, it takes a long time for female turtles to reach adulthood, which takes about 5-9 years. Male turtles take a shorter time to reach adulthood, which takes 4-8 years.

In addition, different feeding environments have different rates of development and maturity. If the breeding environment is comfortable, even the female turtle may mature in 4-8 years. If the breeding environment is poor, they will mature later.