The lizard is very mobile on hot days, and less active in cool weather. Why?

Lizards belong to the class of reptiles and have an incomplete septum in the heart, hence the blood is mixed. This is what determines the dependence of their activity on the ambient temperature. Those. these are cold-blooded creatures, and in the case of a decrease in the ambient temperature, their mobility decreases, and they can go into hibernation. During the warm and hot period, the lizards are most active, because their body warms up from the ambient temperature.