The age of the Chinese tortoise can be estimated by the change of weight growth and the number of circles of the tortoise shell. Generally speaking, about 15-20 grams of weight is a year old turtle, about 50 grams of weight is a two-year old turtle, and about 100-200 grams is a three-year to four-year old turtle. It can also be determined by counting the concentric rings on its back, and the number of concentric rings plus one is its age. It can also be turned over and its age can be calculated according to the stripes on its abdomen. They have irregular circles on each of their stripes, and a few circles indicate their age.
In addition, by calculating the length of its carapace, we can roughly estimate its age. Carapace length is less than 6 centimeters, for annual tortoise; The length of the carapace is between 6-10 centimeters, which is 1-3 years old; The carapace length is more than 10 centimeters, which is basically an adult turtle.
The life span of the wild Chinese tortoise is different from that of the artificially raised tortoise. Under normal circumstances, the average life span of the Chinese turtle is 20-30 years. A few wild turtles can live for 50 years or more. The life span of artificial breeding turtles is related to the suitability of the environment for breeding them. If they are well raised, they can live for 30 years or more. If they are not raised properly, they may not live for 20 years.
