A baby baleen whale depends on its mother's milk diet for at least six months.
A baby Harp seal doubles its weight in only five days after birth, thanks to the amount of protein in its mother's milk. It takes a horse sixty days to double its birth weight.
A female kangaroo that has become a recent mother holds a reserve embryo inside of her after her first baby has crawled into her pouch. This embryo is an "emergency back-up" baby, should the first one die prematurely.
A female oyster over her lifetime may produce over 100 million young.
A mother giraffe often gives birth while standing, so the newborn's first experience outside the womb is a 1.8-meter (6-foot) drop.
An AT&T survey estimated that 122.5 million phone calls to Mom are made on Mother's Day. Other Mother's Day findings revealed that 11 percent never call their mothers, and 3 percent of the 68 percent planning to ring Mom up called her collect.
If frightened or threatened, a mother rabbit may abandon, ignore, or eat her young.
In 340 B.C., Aristotle observed that dolphins gave birth to live young that were attached to their mothers by umbilical cords. For this reason, he considered dolphins and related creatures to be mammals. Twenty-four centuries later, biologists agreed with him.
In the vast majority of the world's languages, the word for "mother" begins with the letter M.
Just like people, mother chimpanzees often develop lifelong relationships with their offspring.
Kittens are born both blind and deaf, but the vibration of their mother's purring is a physical signal that the kittens can feel - it acts like a homing device, signaling them to nurse.
Missy is the name of Snoopy's mother from the Peanuts cartoon strip.
Mother Mexican free-tailed bats find and nurse their own young, even in huge colonies where many millions of babies cluster at up to 500 bats per square foot.
Mother prairie dogs will nurse their young only while underground in the safety of the burrow. If an infant tries to suckle above ground, the mother will slap it.
The average woman in 17th-century America gave birth to 13 children.
The eggs of the marsupial frog are laid in a brood pouch on the mother's back, and the young hatch out in a zipper-like fashion from the pouch.
The embryos of tiger sharks fight each other while in their mother's womb, the survivor being the baby shark that is born.
There is a strong bond between mother and child among orangutans. Orangutan infants cling almost continually to their mothers until they are 1½ years old.
When baby opossum are born, they are so small that an entire litter can fit in a tablespoon. They live inside their mother's pouch for three months before climbing out and riding on her back.
When the female embryo is only six weeks old, it makes preparations for her motherhood by developing egg cells for future offspring. (When the baby girl is born, each of her ovaries carries about a million egg cells, all that she will ever have)