Search results
Results From The WOW.Com Content Network
Most mammals are viviparous, giving birth to live young. [1] However, the five species of monotreme, the platypuses and the echidnas, lay eggs. The monotremes have a sex determination system different from that of most other mammals. [2] In particular, the sex chromosomes of a platypus are more like those of a chicken than those of a therian ...
An aphid giving viviparous birth, an unusual mode of reproduction among insects. In animals, viviparity is development of the embryo inside the body of the mother, with the maternal circulation providing for the metabolic needs of the embryo's development, until the mother gives birth to a fully or partially developed juvenile that is at least metabolically independent.
Vivipary is rare in snakes, but boas and vipers are viviparous, giving birth to live young. [29] Female aphid giving birth. The majority of insects lay eggs but a very few give birth to offspring that are miniature versions of the adult. [18] The aphid has a complex life cycle and during the summer months is able to multiply with great rapidity.
Animals make use of a variety of modes of reproduction to produce their young. Traditionally this variety was classified into three modes, oviparity (embryos in eggs), viviparity (young born live), and ovoviviparity (intermediate between the first two).
There is a positive relationship between mass at birth and length of gestation in eutherian mammals. [17] Larger mammals are more likely to produce a well-developed neonate than small mammals. Large mammals develop at an absolute slower rate compared to small mammals.
When people think of cute baby animals, they often reference kittens, puppies, bear cubs or even piglets. ... Anteaters are generally solitary by nature, and give birth to young one at a time ...
Though most common hippos give birth in water, pygmy hippos can also give birth on land. A female baby pygmy hippopotamus was born at the Metro Richmond Zoo in Virginia on Dec. 9, 2024. Iris gave ...
Toledo Zoo Shares Stunning Behind-the-Scenes Footage of Elephant Giving Birth. Gabrielle LaFrank. March 2, 2024 at 9:01 AM. ... The gestation period of this African animal is a whopping 22 months ...