As we all know, the main food of frogs is flying insects such as mosquitoes and flies, as well as insects such as locusts and crickets in the field. To catch these fast-moving prey, the slow-moving frog can only take advantage of it unprepared and get it easily. So frogs use the method of concealment and ambush. In different environments, they put on different "camouflage clothes" so that their opponents can't find themselves, and it is much easier to catch their prey with magical sticky tongues.
3. Also, frogs are a vulnerable group in the animal kingdom. They are the prey of many animals, especially all kinds of snake food. It can be said that there will always be snakes in the frog's world. Snakes and frogs are almost inseparable, threatening the frog's life from time to time. However, snakes have one weakness, that is, they can only perceive moving objects. Therefore, in order to deal with snakes, frogs wear camouflage clothes, and as long as they squat in the soil or grass, they are likely to escape.
The frog's camouflage suit is actually its protective color. Its color is very similar to the main color of its living environment and changes with the change of the main color of the environment. This is because there are many kinds of pigment cells on frog skin, including red pigment cells with red pigment particles, yellow pigment cells with yellow pigment particles, and melanocytes with black or brown pigment particles. Frog skin consists of epidermis and dermis. In the epidermis, there are only small melanocytes, while in the dermis, there are various pigment cells. Because the epidermis is thin, the color inside the dermis can be seen through.
5. Pigment particles in pigment cells can shrink and spread, which will cause the color change of frog camouflage clothes. For example, when frogs come to a dark environment, the environmental phenomena seen by their eyes will be transmitted to the pituitary gland through nerves, and the pituitary gland will secrete melanin when stimulated. In this way, melanin in pigment cells will spread, black will become very obvious, red pigment and yellow pigment will shrink, red pigment and yellow pigment will not fade so obviously, and the color of frogs will darken.
6. Temperature and adrenaline can also cause frogs to change into camouflage clothes. As the temperature rises, the color of frog camouflage becomes lighter; As the temperature decreases, the color becomes darker. At the same time, light body color absorbs less heat; The darker the body color, the more calories it absorbs. It can be seen that camouflage clothes are also beneficial to frogs to regulate their body temperature. If the frog is injected with adrenaline, its blood pressure will rise and its body color will become lighter.