What do snakes fear most? When will it come out often?

Badger, ferret, raccoon, hedgehog and so on. In mammals.

Eagles, vultures, hornbills, storks, etc.

Among amphibians, toads and bullfrogs also eat snakes, and there are many snakes that feed on other snakes, such as king cobra.

Snakes can be divided into three categories according to the different activities of day and night: the first category is daytime snakes. The second kind is afraid of strong light and likes to hide during the day and move at night, which is called nocturnal snake. The third category is snakes that like to move in weak light (mostly at night and in rainy days, with strong cold resistance), which are called morning faint snakes. The activity of snakes is much more influenced by temperature than by light. Such as cobra during the day, in very hot summer, often appear at night; In low-temperature weather, the sleepy Agkistrodon halys often appear around noon when the sun is shining, but they seldom move at night. Generally speaking, the optimum temperature for snake activity is between 20-30℃, and the optimum temperature for snake activity is 10-35℃. More interestingly, snakes living in tropical areas need to hibernate not only in winter, but also in hot and dry summer, which is called "summer sleep" in zoology. When the tropical dry and hot season comes, ponds and lakes may all dry up because it has not rained for a long time. Snakes, like geckos, crocodiles, lungfish and turtles on the grassland, have become unfavorable by living conditions. In order to adapt to the external environment so that they can continue to survive, they burrow into the ground and enter a "summer sleep" state so as to spend the hot and dry summer.