The tortoise sunlight will not kill the tortoise, but it should not be turned on for too long. Usually, the function of sunlight is to supplement the illumination, which is meaningful for places where the sun can't be shone at ordinary times. If you can bask in the sun, the effect of using the lamp will be worse. The function of sun-drying back is to raise the temperature, which is beneficial to its digestion and metabolism, and at the same time, it can play a role in sterilization, promote the synthesis of vitamin D3, and better absorb calcium.

1. Raising the temperature: The first advantage of basking in the back is to raise the temperature. As a temperature-changing animal, the activity of tortoise is often closely related to the temperature. If the temperature is relatively low, the tortoise is not very active. On the contrary, after the temperature rises, its metabolism will accelerate, and it will love activities more.

2. Eliminate bacteria: Because sunlight contains ultraviolet rays, it still has a good killing effect on some bacteria, especially for turtles soaked in water for a long time, it is easy to have various fungi on their backs, which can be completely eliminated by basking in the sun, thus preventing various diseases.

3. Promote calcium absorption: Sun exposure can also promote calcium absorption. Although sun exposure can not supplement calcium, it can promote the synthesis of vitamin D3, which is of great help to calcium absorption, bone growth and soft nail disease.