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Monotreme young are hatched from eggs. Unlike other mammals, they are not born live. They are still mammals because the mother nurtures her young with milk which she secretes from glands on her abdomen.

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12y ago
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11y ago

The only known monotremes, platypuses and echidnas, raise their young differently.

The Platypus

Platypuses are one of two types of mammals which lay eggs. Unlike the echidna, the other egg-laying mammal (or monotreme), the platypus does not develop a temporary pouch to incubate the eggs.

The mother platypus prepares a chamber at the end of a burrow especially for the purpose of protecting the young. After she lays one to three eggs, which have already developed within her body for 28 days, she curls her body around the eggs to incubate them for another ten days.

After hatching, the mother platypus feeds her young on milk secreted from glands, rather than from teats. The young are blind, hairless and completely vulnerable. They are suckled by the mother for 3-4 months, during which time she only leaves them to forage for food. As she leaves the burrow, the mother platypus makes several thin plugs made of soil along the length of burrow; this helps to protect the young from predators which would enter the burrow during the mother's absence. When she returns, she pushes past these plugs, thereby forcing water from her fur and helping to keep the chamber dry.

The male platypus does not take any part in raising the young platypuses.

Echidnas

During the breeding season, a female echidna develops a rudimentary pouch - just a flap of skin - on its abdomen. The female echidna manages to lay a single egg in its pouch, and incubates the egg there. When the young hatches, it is fed on mother's milk which seeps from milk glands, not teats like other mammals.

Once the young begin to develop their sharp spines, they are transferred to a burrow. They remain in the burrow, not the pouch, to continue their development. This is their most vulnerable stage, as snakes often enter the burrows and eat the young.

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12y ago

Monotremes are egg-laying mammals. Therefore, their young develop in soft-shelled eggs.

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12y ago

No. Only placental mammals (eutherians) are born fully developed. Monotremes are not even born - they are hatched. Monotremes are egg-laying mammals.

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13y ago

Monotreme young develop in eggs. Monotremes, which include the platypus and echidna, are the only egg-laying mammals.

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13y ago

In the egg!

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Q: How do monotremes young develop?
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Related questions

Do monotremes eat their young?

Monotremes never eat their young.


Is a Monotreme a kangaroo?

No. A kangaroo is a marsupial, meaning it gives birth to live young which then develop in an external pouch. Monotremes are egg-laying mammals. Only platypuses and echidnas are monotremes.


Do monotremes feed their young milk?

Monotremes do not have nipples like most mammals, so the young can't suckle milk. Instead, monotremes have pores that ooze milk. The baby monotremes then lap up the milk.


Are moose monotremes?

No. A moose is a placental mammal, meaning it gives birth to live young. Monotremes are egg-laying mammals. Only platypuses and echidnas are monotremes.


Do platypuses have belly buttons?

No. Platypuses are not placental mammals, but monotremes, meaning that they reproduce by laying eggs. The young do not develop in the mother's womb, and therefore do not receive their nutrition via an umbilical cord.


Are otters Monotremes?

No. Otterns are not monotremes, which are egg-laying mammals. Otters are placental mammals. They give birth to live young.


Are birds monotremes?

No, birds are strictly avians. Mammals that lay eggs are considered monotremes.


Do mammals develop in egg or in uterus?

Placental mammals and marsupials develop in a placenta within the uterus before being delivered. Monotremes develop in an egg.


What is the reproductive process of monotremes?

Monotremes have a reproductive process quite unlike any other mammals. They lay eggs in order to reproduce, yet they suckle the young, thus placing them in the classification of 'mammal'. Monotremes' eggs develop in the mother's body for a period of about 28 days. After they are laid, they are then incubated for ten days. Echidnas lay a single egg into a rudimentary pouch they develop during breeding season. Platypuses lay one to three eggs in a chamber at the end of a long burrow they dig in riverbanks.


What Fact about mammals?

Mammals are warm-blooded vertebrates.They have a covering of skin or hair/fur.All mammals suckle their young with mothers' milk.The young of most mammals are born alive, except for monotremes - the platypus and echidna - which lay eggs.There are three main groups of mammals: placental, marsupial and monotreme. Monotremes are the egg-laying mammals. Marsupials are characterised by giving birth to undeveloped young which, in most species, must then develop in a pouch.


What are types of mammals?

They are:1. Monotremes - They are animals that lay eggs and the young suckle mother's milkafter hatching.2. Marsupials - Nursing young housed in external pouch and embryo are nursedinside the mother by placenta.3. Eutherians - Placenta provide more intimate and long lasting associationbetween the mother and developing young.


How are momtremes different from all other mammals?

Monotremes lay their young in eggs.