The body length of yellow-eared turtle is between 12-27 cm, and how big it can grow depends on their living environment. If it is a yellow-eared turtle raised in the family, it will be smaller. Because their living environment can't completely simulate the wild environment, and there is not enough room for growth, they are about 15-20 cm long in adulthood.

But wild yellow-eared turtles are larger, and their body length is about 20-27 cm in adulthood. Because there is plenty of space to live in the wild, and the living environment is more suitable for their growth and development, they will be larger in adulthood.

Most artificially bred yellow-eared turtles can mature in 3-5 years, but how long they grow up depends on the way they are raised. If farmed yellow-eared turtles are not allowed to hibernate, they can generally mature in 3-4 years. If they hibernate normally, it will take longer to mature, about 4-5 years.

Although yellow-eared turtles can mature in about 5 years, it is best for breeders not to let them reproduce immediately. Because they are just mature and their organs are unstable, it is best for breeders to wait for them to reproduce after one year of adulthood.