Females cannot call. There is a pair of light blue sac-like protrusions on the sides of the throat on the ventral surface of the male's head. They are called vocal sacs, which are a kind of vocal organ that can expand the throat to emit sounds. A loud bark like a dog's bark serves to attract females.

The frog generally refers to the tiger-striped frog. The tiger-striped frog is also called the water chicken. It is tall and strong and is known as the "Asian frog". Females are larger than males, with a body length of more than 12 centimeters and a weight of 250 to 500 grams. The skin is relatively rough, with dark irregular markings on the head and sides of the body. The back is yellow-green and slightly brown, with more than a dozen rows of skin ribs arranged vertically, and small warts are scattered between the skin ribs. The belly is white with irregular markings, and there are gray-brown spots on the pharynx and chest. There are horizontal spots on the front and rear limbs. It got its name because the markings look slightly like tiger skin. The toes are pointed and rounded, and the toes are fully webbed. The forelimbs are thick, with well-developed finger pads and are gray in color. Male frogs have a pair of external vocal sacs. It has been listed as a national level II key protected animal.

The head of the tiger frog is generally triangular in shape, with no obvious boundary between the head and the trunk. The head end is pointed, which can reduce resistance when swimming and facilitate fast swimming. The mouth is very wide and rarely opened except for hunting. The eyes are located on the back or sides of the head. There are eyelids above and below, and connected to the eyelids is a transparent nictitating membrane that folds inward. When diving, the nictitating membrane moves upward to cover the eyeball. There is a nasal valve on the external nostril, which can be opened and closed at any time to control the inflow and outflow of gas. There is a pair of light blue sac-like protrusions on the sides of the throat on the ventral surface of the male's head, called the vocal sac, which is a kind of squeak that can expand the throat to make a loud bark like a dog, which plays a role in attracting females. .