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The only mammals which lay eggs are the monotremes. These include the platypus and the two species of echidna, the short-beaked echidna of Australia and the long-beaked echidna of New Guinea.
In the case of the platypus, the eggs are about 11 - 15 mm in size, or about the size of a grape. Interestingly, only the left ovary is functional. Also, while the mother produces milk, she does not have teats.
The echidna lays eggs which are about the same size.
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What else can I help you with?
What size is the biggest mammal?
The blue whale is the biggest mammal.
Is a bear a medium size mammal?
no.
The first dinosaur was about the size of what mammal?
The first dinosaur was about the size of a horse.
Why are mammals different sizes?
If every mammal was the same size, it would be hard to hide from the predator or stalk the prey. Every mammal is the size it needs to be to survive.
What is the the strongest land mammal for its size?
The elephant probably
What is the only Irish mammal that can fly?
The pygmy shrew is Ireland's smallest mammal. About half the size of a field mouse.
What mammal has blue eyes the size of a soccer ball?
None.
What size and shape of a mammal reflects the mammals diet?
Its teeth and stomach.
Which mammal has the greatest relative size difference between the sexes?
Elephant Seal
Do mammals produce high or low numbers of offspring?
It depends on the size of the mammal.
Which process allows a mammal to continue to grow in size?
mitosis of body cells
What does mammal mean in size?
Nothing. Mammals can be as small as a mouse or large as a whale.
