The reproductive mode of dolphins is viviparous. They belong to aquatic mammals, and their reproductive mode is similar to that of most mammals. When dolphins mature, male dolphins and female dolphins will mate, and after successful mating, embryos will mature in the mother. Dolphins need about November from pregnancy to childbirth. When giving birth, the tail of the baby dolphin will come out first and the head will come out last. After the baby dolphins are born, the female dolphins will take care of them all the time, and the newborn dolphins will not eat other foods, but mainly rely on the milk produced by the female dolphins to survive. Female dolphins will stay with young dolphins until they have mastered all the survival skills.

1. Reproductive age: Dolphins should reach a mature age. Generally speaking, male dolphins have a shorter time to mature, while female dolphins have a longer time to mature. When they are mature, dolphins can mate.

2. Mating: Male dolphins will mate in the right season. After successful mating, male dolphins will leave directly, and embryos will develop in female dolphins, which can be produced after maturity.

3. Production: Embryos will be born in female dolphins about 11 months after development. When giving birth, the tail will be born first, and then the head will be born. Dolphins usually take about 3 hours to give birth, and when they give birth, they will consume a lot of physical strength.

4. Breastfeeding: Newborn dolphins usually weigh about 10 kg. After birth, young dolphins absorb the milk of female dolphins to survive. During the growth and development of the baby dolphin, the female dolphin will accompany it until the baby dolphin learns predation and other skills before leaving.