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Notes on Mammals

Monotremes Young Develop 1 Lay eggs with a tuff leathery shell.
Monotremes Young Develop 2 Incubates eggs.
Monotremes After "Birth", Young Nourished by Lack nippples, milk collectors, so their young lick the fur on their mother's mammary glands, where milk is "sweated" out.
Monotremes Example Duck Billed Platypus.
Monotremes Other facts Monotreme means "one opening."
Marsupials Young Develop 1 Young develop for a short time inside mother.
Marsupials Young Develop 2 Baby emerges "honey bee sized" and climbs to pouch.
Marsupials After "Birth", Young Nourished by And latches on to a nipple inside the pouch, young also develop in pouch.
Marsupials Example Possum, Kangaroo, etc.
Placentals Young Develop 1 Young Develop for a longer time inside mother's uterus.
Placentals Young Develop 2 Young nourished by a placenta thru the umbilical cord.
Placentals After "Birth", Young Nourished by After birth, young nurse on mother's nipples.
Placentals Example Potbellied Pigs, Whale, Unicorn, Human, etc.
Placentals Other Facts After birth, the placenta exits the body. Therefore, the placenta is also called the "After Birth."
Created by: CharlieL