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An egg is the organic vessel containing the zygote in which an animal embryo develops until it .... Among mammals, early extinct species laid eggs, as do platypuses and echidnas (spiny anteaters). P...

List of Oviparous Animals | Cuteness.com


These birds spend a lot of time caring for their young to help the species stay alive. In contrast, birds who lay 10 or more eggs, including the Mandarin duck, have ...

What kinds of animals lay eggs? | Reference.com


Monotremes, mammals that lay eggs, are limited to the platypus and several species of spiny anteaters. These animals form an umbilical cord to the egg which ...

Name Some Animals That Lay Eggs? - Blurtit


Most species of fish, amphibians, all birds, reptiles and most insects and arachnids lay eggs. In most reptiles and birds, fertilisation of the ovum is what produces ...

Animals from Eggs - MacMillan


animals lay eggs? Have the children ever seen their eggs? Tell them we use commas to separate items in a list. Ask the children to describe what is happening ...

The Two Mammals That Lay Eggs | Mental Floss UK


At least we know that mammals don't lay eggs right? Well actually, that's not entirely true. There are two primitive species of mammal that do lay eggs.

Egg-laying Mammals :: Saint Louis Zoo


It's one of two types of primitive egg-laying mammals, or monotremes. .... we have since been in the forefront of captive research and breeding of this species.

Introduction to the Monotremata


There are only five living monotreme species: the duck-billed platypus and four ... are very primitive for mammals because, like reptiles and birds, they lay eggs ...

Why Some Bird Species Lay Only One Egg -- ScienceDaily


Why Some Bird Species Lay Only One Egg. Date: December 9, 2008; Source: University of California - San Diego; Summary: A global study of the wide variation ...

zoology - Laying eggs vs giving birth: is there a connection with ...


Jul 30, 2013 ... Boa constrictors are one species which gives birth to live young rather than laying an egg and being a snake their ears are 'inside their body'.

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Which animals lay eggs? | Reference.com


Egg laying was an evolutionary change to ensure survival of the offspring. Only 2,000 of the 10,000 modern species of lizards and snakes have live births, while  ...

Oh Baby! Which Animal Families Lay Eggs and Live Birth?


Jan 16, 2016 ... Many animal groups have some species that lay eggs and others that birth live young, including fish, amphibians, and yes, even mammals, ...

Egg Laying Mammals List and Facts with Pictures - List of Animals


Mostly the mammals give birth to babies but only a few egg laying mammals can also be found on earth whose pictures and facts list is given.