ElephantProtective elephant mom, caring for their baby. Female elephants deserve a price for enduring a 22-month pregnancy. Once the baby is born, the other "ladies" in the herd all lend a hand, including grandmothers, sisters, aunts and even cousins. These full-time babysitters are called "Allomothers," and they help in every aspect of rearing the young calves — so in this case, it really does take a village to raise an elephant!
Female koala always eats highly poisonous eucalyptus leaves. Her digestive track can tolerate this otherwise deadly treat thanks to bowels that are packed with special bacteria that detoxify the leaves. Unfortunately, koala babies aren't able to dine precious eucalyptus leaves but Momma Koala comes to the rescue and helps them build up their tolerance by feeding them her own feces.
Once the babies are born, the mothers carry them around in their jaw for protection, assisting them to the water, where they will spend their first years eating fish, insects, snails and crustaceans.
Newborns are blind and toothless, but super cute, and they generally stay by their mom's side for just two years before being sent out on their own — sort of like condensing the toddler, tween and adolescence years.
Patience is a virtue, especially when it comes to being a cheetah mom. At any given time, females usually have four to six cubs to care for, but these kids aren't born with survival instincts. It's up to mom to teach them how to hunt prey and avoid other predators, and this training can take nearly two years to sink in and stick.
The highly intelligent orangutan is the ultimate do-it-yourself mom. She spends nearly all her life high up in the trees, where she builds a new nest every single night from branches and foliage, fashioning more than 30,000 homes in her lifetime! She also never puts her babies down, generally nursing offspring until they reach the age or 6 or 7 — that's the longest dependence of any animal on Earth.
Once pregnant, this moms-to-be immediately start to bulk up, even more, putting on additional weight during every day of the 11-month gestation period. However, after giving birth, she'll drop about 600 pounds while nursing her cubs in less than a month — sort of like all those Hollywood celebrity moms who get their shape back in a ridiculously short period of time
Female octopus lays over 50,000 eggs, and that's without any fertility drugs! It takes around 40 days for the eggs to develop before hatching, and the mom stays close to them the entire time, protecting them from predators while gently blowing currents of water over them to provide oxygen.
Okay, these animals aren't the cutest ones, but their sacrifice for newborns is unbelievable. she's lured by the male into his bachelor burrow for mating where — surprise! — she discovers that she's actually in a harem with 25 other pregnant females! If that wasn't bad enough, once the babies are ready to be born, they make their way into the world by eating her from the inside out! And you've expected something less gross from this childbirth.
source - http://www.animalplanet.com
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