Do mammals lay eggs Do mammals lay eggs, Do mammals lay eggs or give birth?, Which mammals still lay eggs?, Are no mammals lay eggs True or false?, Why don't mammals lay eggs?, What 5 mammals lay eggs?, Do whales lay eggs?, Is A Penguin A mammal?
Most mammals do not lay eggs; however, there are five known extant species of mammal that do lay eggs. The five mammals which lay eggs are the platypus, the eastern long-beaked echidna, Sir David's long-beaked echidna, the short-beaked echidna, and the western long-beaked echidna.
Do mammals lay eggs or give birth?
Most mammals do not lay eggs; however, there are five known extant species of mammal that do lay eggs. The five mammals which lay eggs are the platypus, the eastern long-beaked echidna, Sir David's long-beaked echidna, the short-beaked echidna, and the western long-beaked echidna.
Which mammals still lay eggs?
Mammals are hairy, produce milk, are warm-blooded, and give birth to live young… except for two animals. That's right. There is a group of mammals, called monotremes, that lays eggs instead of giving birth to live young.
Are no mammals lay eggs True or false?
Egg-laying Mammals
There are only five living monotreme species: the duck-billed platypus and four species of echidna (also known as spiny anteaters). All of them are found only in Australia and New Guinea.
Why don't mammals lay eggs?
Only two kinds of egg-laying mammals are left on the planet today—the duck-billed platypus and the echidna, or spiny anteater. These odd “monotremes” once dominated Australia, until their pouch-bearing cousins, the marsupials, invaded the land down under 71 million to 54 million years ago and swept them away.
What 5 mammals lay eggs?
It can be presumed by the fact that no other mammals anywhere else in the world lay eggs, that evolution saw this trait as being inferior to live or placental birth (marsupials) and that all of the other mammals who did possess this trait became extinct due to natural selection.
Do whales lay eggs?
Only five species of animals share this extraordinary egg-laying trait: the duck-billed platypus, and four echidna species, the western long-beaked echidna, eastern long-beaked echidna, short-beaked echidna, and Sir David's long-beaked echidna. Monotremes are only found in either Australia or New Guinea.
Is A Penguin A mammal?
Contrary to what some may believe, whales are not fish and do not lay eggs. Female whales carry their unborn fetus in the womb and when it is time to deliver, they will give birth to a live, oxygen breathing, baby whale.
Is A Whale A mammal?
Penguins are neither mammals nor amphibians; they are birds. They hatch from eggs, are warm-blooded, and have bodies covered with feathers.
Do sharks lay eggs?
Whales are mammals which means that, like humans and other land mammals, they have three inner ear bones and hair, they breathe air, and the females produce milk through mammary glands and suckle their young.
Why can't humans lay eggs?
Sharks exhibit a great diversity in reproductive modes.
There are oviparous (egg-laying) species and viviparous (live-bearing) species. Oviparous species lay eggs that develop and hatch outside the mother's body with no parental care after the eggs are laid.
Did humans once lay eggs?
Because mammals (excluding the Platypus) gave up egg laying and evolved a “give birth to live young” system. It was beneficial as the offspring was better protected and better nurtured. To go back to an egg laying system would require major re-architecturing of the reproductive system and evolution doesn't do backsies.
Do amphibians lay eggs?
Among mammals, the only currently surviving egg layers are monotremes — the platypus and echidna. So, no matter which way you define 'human,' humans never laid eggs.
Which animal Cannot lay eggs?
All amphibians lay eggs. Amphibian eggs do not have hard shells and need to be moist to hatch. Most amphibians lay their eggs in water. Amphibians that lay their eggs on land have developed ways to keep their eggs damp.
What is the only mammal that can fly?
Expert-Verified Answer
Birds, insects, reptiles and fishes are oviparous animals. Animals which reproduce by giving birth to their young ones are called viviparous animals. These animals do not lay eggs. Mammals like cat, dog and man are viviparous animals.
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