Viviparous animals are all those animals that gestate in the female's womb, there is a great difference between viviparous animals and oviparous. All mammalian animals are viviparous, except for the echidna and the platypus, which are oviparous mammals. There are also certain species of lizards and amphibians that are mammals. There are some species that are ovovivíparas like the shark.

The kangaroo is one of the viviparous animals

The kangaroo is one of the viviparous animals

Features

Viviparous animals are mainly characterized in that the embryo is gestated inside the female's womb and they have a type of sexual reproduction (The male expels the sperm and this joins the ovum thus giving rise to gestation, thus creating the fetus).

The young grow in the placenta, where they receive the nutrients and oxygen necessary to grow healthy. In the placenta they remain alive until the female calves. There is an exception for marsupials, which once hatched can remain in the mother's pouch for weeks.

The gestation and its period of time is different for each species, and there are up to 30 days, such as rabbits, even rhinos or whales, which can take up to a year and a half.

Viviparous animals and their classification

We can classify them according to their need to be nourished or not according to the placenta.

Placental viviparous

They are the vast majority of mammalian animals, they require a placenta to survive until the female stops them. Among its characteristics we find that they have the particularity of being a structure in more evolved beings. They are usually large and have a large brain, late reproduction, and long life expectancy.

Viviparous Marsupial Animals

Unlike the placentals, these viviparous animals do not have a placenta to feed themselves, so the puppy is born underdeveloped. Find warm protection with plenty of breast milk inside the marsupium (outer pouch that female marsupials have).

Viviparous marsupial animals are usually born after 38 days of gestation, then they move to the marsupium and the female becomes pregnant again several days later, leaving the embryo in a dormant state until the pouch is empty again.

List of viviparous animals

A moose resting

I raised



elk (Moose moose) is the largest member of the family of deer Cervidae (order Artiodactyla). Moose are striking in appearance due to their imposing size, black color, long legs, hanging snout, and hairy hanging dewlap (called a bell) and the huge, wide, flat antlers of old bulls.

antelope lechwe

Antelope



antelope (Alcelaphinae) is a wide and diverse selection of herbivores of the Bovidae family that are not classified as sheep, cattle or goats (this type of informal designation is sometimes called "garbage dump"). There are approximately 91 species classified as antelope, most of which are native to Africa, but are also found in Asia and parts of the Americas. Approximately 25 species are listed as In danger.

The squirrel is a small rodent.

Chipmunk



chipmunk (Sciuridae) is an agile mammal Bushy-tailed rodent found throughout the world. They belong to the Sciuridae family, which includes prairie dogs, squirrels, and marmots.

The armadillo is a small mammal characterized by having a dorsal shell.

Armadillo



armadillo (Dasypodidae) is a western mammal best known for their unique armor-like carapace and notorious for their digging habits. Some describe them as prehistoric-looking rats with sharp shells and claws, they are fascinating creatures.

We can appreciate the white fur of the ermine in winter.

Ermine



ermine (Mustela Erminea) is a small mustelid, so it is related to the weasel and the otter. It has an orange body, a black tipped tail, and a distinctive gait. They can be found in meadows, heaths and forests. It is also known as the short-tailed weasel.

Babuino

Babuino



baboon is a medium-sized primate which is located in many different places in Africa and in a few locations in Arabia. They are highly sociable and extremely intelligent mammalian animals that are able to bond with other members of the herd that can last for life. They adapt quite ease in the middle, although its population is being reduced due to hunting and deforestation.