Examples of viviparous

Humans

• Humans are viviparous animals that reproduce exclusively via internal fertilization like all other mammals.
• The fertilization takes place in the fallopian tube after which, the zygote moves towards the uterus and plants itself.
• The uterine wall is connected to the mother via the placenta that provides nutrients to the growing fetus.
• Unlike some viviparous animals, the newborn in the case of humans is completely developed before birth.
• After birth, the mother provides nourishment through the secretion of the mammary glands.
• Similarly, a high level of parental care is observed after birth, where they look after the newborn for several years.

Higher sharks

• Higher sharks are a group of animals that are viviparous, unlike other fishes.
• Different sharks show different mechanisms of reproduction with some resembling that in the case of mammals.
• Some sharks like the Great White Shark have tissue extension from the oviducts of the female that connect to the gills of the developing shark. This structure has functional similarity to the placenta in mammals.
• Some tissues might even secrete a milky substance that allows the exchange of oxygen and nutrients with the developing embryo.
• After sufficient development inside the mother, the baby shark comes out of the cloaca. After birth, sharks exhibit very little parental care as the newborn are developed enough to look for prey.