For the same reason that females don't produce sperm cells. That is how nature made it. Females produce egg cells and have the equipment for producing babies. But this equipment doesn't produce babies on its own. Males produce sperm cells which start the process and provide genetic code to produce half of a baby.
In nature, form follows function. Female animals are designed to produce and care for offspring. Male animals of the same species are designed to impregnate the females, protect them, and help provide for the female and the offspring.
Equality is not a concept that nature understands. Gender equality and homosexuality as a social construct are all human ideas, and these ideas make it harder to understand natural concepts such as this question poses.
All male seahorses carry children rather than females.
Spina Bifida is a birth defect, so the "age" question is answered simply by "all ages of people". Spina Bifida occurs in both genders, but is more common in females.
Yes, it is believed that all of Santa's reindeer, including Rudolf, are females. This is because males shed their antlers in late November and early December, but females retain them until they give birth in the spring.
Both genders give it their all and try to win.
All of them, but the male Sperm Whales usually stay in the deep waters of Antarctica. The females swim in the warmer waters with their calves. But when it is mating season the females will go to Antarctica. And they give birth by the equator.
This period is called gestation for all female mammals who give birth to live young and nurse them.
All (female) fish give birth.
The correct phrase is "both genders."
Yes. As a mammal, all monkeys and primates give birth.
Yes, it is believed that all of Santa's reindeer, including Rudolf, are females. This is because males shed their antlers in late November and early December, but females retain them until they give birth in the spring.
Well yeah. If I understand your question. They don't give birth to babies that are dead. I think they all give birth to babies in eggs
Well, a rhino is most likely to start mating at the age of 2-3 (females) and 6-7 (males) the mating season for a rhino is all year round.