The male frog calls first to attract the female frog. When the female frog arrives, the male and female frogs embrace each other to promote the discharge of hermaphroditic germ cells, and the hermaphroditic germ cells combine in water to form fertilized eggs. Many fertilized eggs form an egg mass together, and the fertilized eggs hatch into tadpoles. Tadpoles grow hind limbs first, then forelimbs, and finally their tails gradually disappear and become small frogs, and young frogs gradually grow into frogs.
Frog larvae and adults are quite different in morphological structure and living habits, and this development belongs to metamorphosis. Frogs love to eat small insects and are good at finding moving small insects. When they were catching insects, a frog squatted in a small pit, kneeling on the ground with its hind legs curled up, its front legs supported, its face upturned with its mouth open and its stomach bulging, waiting for something.
Basic habits
Frogs often inhabit rivers, ponds and rice fields, mainly in the grass near the water, and sometimes they can dive into the water. Mostly at night, mainly eating insects, but also eating some snails, snails, shrimps, small fish and so on. Most of the insects they eat are agricultural pests. It is estimated that a frog can prey on 70 insects a day and kill 15000 pests a year.
Frog is an animal that is beneficial to agriculture and should be protected. When it gets cold in late autumn, frogs hibernate at the bottom of the water or in caves, and then return to the water to breed when the weather gets warmer the next spring. During the breeding season, many male frogs often gather in the same area and sing loudly and continuously. This is the so-called frog quarrel pit.
After two months of development, tadpoles turned into young frogs, their tails gradually disappeared, their body length was greatly shortened, they began to live on land, and their feeding habits began to change to animal food. It takes about three years from young frog to sexual maturity.