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The mammal that lays eggs is?
1. Opossum
2. Otter
3.  Kangaroo
4. Duck-billed-platypus

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Correct Answer - Option 4 : Duck-billed-platypus

The correct answer is Duck-billed-platypus.

  •  The mammal that lays eggs is Duck-billed-platypus.
  • They are small and shy animals.
  • They have a flattened head and body to help them glide through the water.
  • Males are also venomous
  • They are bottom feeders i.e. feed on  insects and larvae, shellfish, and worms
  • They can survive up to 20 years or more in captivity and up to 12 years in the wild.
  • They are believed to be the earliest relatives of modern mammals.

  • The egg-laying mammals are called monotremes.
    • There are only five living monotreme species:-
      • The duck-billed platypus and four species of echidna (also known as spiny anteaters).
    • They are all found only in Australia and New Guinea

  • Opossums are mammals. They do not lay eggs.
    • They give birth to their offspring.
    • They are generally found in North America.
    • Opossums are scavengers, and they often visit human homes or settlements to raid garbage cans, dumpsters, and other containers.
    • Opossums also eat grass, nuts, and fruit.
    • They will hunt mice, birds, insects, worms, snakes, and even chickens.
    • When threatened they extend their tongues and appear to be dead. This is the origin of the phrase "playing possum" which means to appear dead.
  • Kangaroos are mammals. They do not lay eggs.
    • They are characterised by powerful hind legs, a long strong tail, and small front legs.
    • Kangaroos can leap some 30 feet (9 meters) in a single jump because of their large feet.
    • They are generally located in Eastern Australia.
    • Female kangaroos sport a pouch on their belly, made by a fold in the skin, to cradle baby kangaroos called "joeys".
  • Otters are carnivorous mammals that give birth to their offspring.
    • They are found on every continent except Australia and Antarctica.
    • They are small, with short ears and noses, elongated bodies, long tails, and soft, dense fur.
    • Baby otters are called pups or kittens.

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