Not all male grass turtles can ink, because whether grass turtles can ink has a great relationship with their genes. If they don't have ink genes, it is difficult for them to ink even if they are reared in a good way the day after tomorrow, so whether grass turtles can ink depends mainly on their genes. Inking of grass turtle is a physiological phenomenon, which is manifested in the change of body color from brown to ink black. The ink of grass turtle usually starts from the eyes, and then slowly spreads to the neck, limbs and so on. Therefore, whether the turtle can be inked or not is partly affected by the way it is raised the day after tomorrow.

If you want to ink grass turtles, you must first choose grass turtles with ink genes, because not all male turtles can ink, so it is best to choose some darker turtle seedlings when selecting. Secondly, it is necessary to ensure that their living environment is comfortable, and try to simulate the original environment in the process of breeding. If conditions permit, it is best to raise it in a pool. If there is no pond, it can be cultured in larger dark containers. Finally, feed more calcium-containing foods, such as small fish, shrimp, red worms, lean meat, etc. Besides feeding more calcium-containing foods, we should also ensure their comprehensive nutrition. Breeders need to feed some plant feeds regularly to ensure their balanced nutrition. In addition, they should be given more sunshine at ordinary times, which can promote their absorption of calcium.