There are two egg-laying mammals, and they both lay eggs with leathery shells, rather than hard shells, like birds' eggs. The platypus and the echidna are both egg-laying mammals, or monotremes. They are still classified as mammals because they feed their young on mothers' milk - a characteristic unique to mammals alone.
There are just three known species of egg-laying mammals, or monotremes. They are the platypus and short-beaked echidna (Tachyglossus aculeatus) of Australia, and the long-beaked echidna (Zaglosssus bruijni) of Papua New Guinea. The echidna is sometimes called the spiny anteater, and there are several sub-species of the long-beaked echidna: the Western long-beaked echidna, Sir David's long-beaked echidna and the Eastern long-beaked echidna.
All turtles All tortoises All crocodilians Some lizards: Iguanas Water dragons Geckos Veiled chameleons Panther chameleons Monitors Snakes: All pythons Kingsnakes Milksnakes Rat snakes Corn snakes
Many reptiles lay eggs with leathery shells, for example Pythons and other snakes, Crocodiles and Alligators.
This is a monotreme, or egg-laying mammal. Monotremes include the platypus and the echidna.
Reptiles and birds are the animals that hey eggs (with shells)
Snakes, lizards, crocodile, alligators, turtles and many other reptiles lay eggs. In fact it's rare for a reptile to give live birth.
reptiles lay hard leathery eggs.
A monotreme is not a mammal.
CHICKEKENS AND DUCKS CAN LAY THESE
alligator?
Their eggs are leathery so they can get out of their shells easily
The leathery shell of a reptile egg is to simply protect the eggs from any predators.
amnionic eggs
No, they are usually hard-shelled. Snakes eggs are leathery.
Yes. Penguins are birds, and birds reproduce by laying eggs with hard shells. This is different from the eggs of reptiles and monotremes, which have leathery shells.
They have waterproof (but soft) shells and the reptile usually buries them.
No, the shells are leathery and soft, making them easier to bury and cover in dirt.
THe shells of reptile eggs is porous - it absorbs oxygen through the membrane.
They are classified as 'Reptilia' as they lay eggs and are not 'live' bearers
The only reptile-like characteristic which platypuses have is the fact that they reproduce by laying soft-shelled, leathery eggs (and not all reptiles lay eggs, either). Apart from that, these creatures fit all the characteristics of mammals.
Yes. Bird eggs are similar in structure to reptile eggs with the main difference being that bird eggs have a hard shell while reptiles eggs have a softer, leathery shell.
no,some either lay eggs or give birth to live young