Q:

Which animals lay eggs?

A:

Quick Answer

Birds lay eggs, although there are other egg-laying animals, including two mammals: the duckbill platypus and the echidna. These two creatures are natives of Australia. Scientists call these primitive egg-laying mammals monotremes.

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Which animals lay eggs?
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Full Answer

Most reptiles lay eggs; however, some snakes have live births. According to Nature World News, a recent discovery by scientists show that ancient snakes and lizards all gave live birth. 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 the rest lay eggs.

Sea turtles lay eggs. While the male and female mate at sea, the female comes ashore to lay her eggs, normally at high tide. She digs a pit in which she deposits 50 to 200 eggs. She covers the eggs with sand, spending only a couple of hours out of the water. She may repeat the process several times during the session.

In seahorses, the female deposits the eggs into a pouch located on her mate's abdomen. The male fertilizes the eggs in the pouch and they develop there, depending on nourishment from their yolk sacs. Once the embryos develop, the male gives birth to new seahorses.

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Related Questions

  • Q:

    What insects lay eggs?

    A:

    Insects that lay eggs are called orthopterans, which consist of common species such as praying mantis, cockroaches, crickets and grasshoppers. Although these insects all lay eggs, they have different methods of carrying out the egg laying process. All egg-producing insects have distinct methods of carrying, hatching and raising their young.

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  • Q:

    Where do ticks lay eggs?

    A:

    Many ticks lay eggs on the ground, where they are protected by plants. However, "soft" ticks, which do not have an additional exterior hard shield, usually live in the nests and burrows of animals. These ticks deposit eggs in the nests.

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  • Q:

    What two mammals lay eggs?

    A:

    The short-beaked echidna and the duck-billed platypus are the two mammals that lay eggs. The echidna resembles a porcupine, but it is a completely different animal.

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  • Q:

    Do starfish lay eggs?

    A:

    Starfish do lay eggs. As starfish spawn, thousands of male and female sex cells, or eggs and sperm, are released into the water. The fertilized eggs become zygotes, and the starfish sits over the eggs or holds them in a special sac called a brooding basket.

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