Most reptile eggs are leathery to protect them when laid in holes where they drop into contact with other eggs and it serves to make them more resiliant when covring the eggs with sand, dirt and other debris to conceal them.
amnionic eggs
A leathery shell is a protective covering made of tough and flexible material, resembling leather. It is found on certain types of fruits, seeds, and animals such as turtles and tortoises. This type of shell provides protection and support to the organism.
The adaptation of laying eggs with a tough leathery watertight shell would be well-suited for a terrestrial environment, such as a desert or forest. This type of egg shell helps protect the eggs from drying out in arid conditions and from external environmental threats in a terrestrial setting.
To eat their food, which in their world is usually fresh meat. So the sharp teeth cuts and tears through the tough leathery skin digging down into the muscle. Then his teeth help him rip and cut the meaty muscle off bones.
Gastroliths are stones or pebbles ingested by some animals, like birds and reptiles, to help grind food in their stomachs. They aid in the digestive process by breaking down tough material, like seeds or bones, before passing through the digestive tract.
amnionic eggs
amnionic eggs
A reptile egg is much much much softer than birds egg.
Land animals which have tough and dry skin are called reptiles:)
Generally, they will have tough, leathery skin.
Very tough, leathery skin.
The rough, thick, and leathery meningeal layer is the dura mater.
Birds don't have fins as fins are for swimming in water. One could argue that they have scales on their feet as the skin there is tough and 'scaly' but there is not an overlapping matrix of scales like their would be in reptiles.
Contrary to popular belief, reptiles do not feel slimy. Certain reptiles, such as snakes, feel soft and a little bumpy, while other species such as giant tortoises can have skin that feels like old leather. Leopard geckos have bumpy skin, looking and feeling almost like goosebumps. Hard parts of a reptile's body, such as a turtle's shell or an alligator's ridges, feel about as tough as fingernails. There are as many textures of reptiles as there are species.
Reptiles are cold blooded (cannot regulate body temperature) animals. Reptiles are vertebrates (with a backbone). Their bodies are covered with scales or scutes. They lay eggs. Reptiles skin is tough, rough and scaly.
Animals do eat reptiles. Particular animals do eat a vast variety of reptiles. Reptiles can even eat other reptiles. Mostly, it's not a common snack for animals in general because reptiles are scaley and tough to chew and defend themselves well.
They have 2 toes per foot and the bottoms of their feet are padded with tough leathery soles to protect them from sharp rocks.