Are dinosaurs ruminants? Were dinosaurs cold blooded?

Modern ruminants are all mammals, dinosaurs are reptiles, and it is estimated that there will be no ruminant dinosaurs. Ruminants have four stomachs, have the habit of rumination, and have a well-developed cecum, which is suitable for digestion in modern plants. In the age of the dinosaurs, ferns may have been relatively easy to digest, and perhaps dinosaurs did not need such a complex digestive system.

Were dinosaurs cold-blooded, or warm-blooded? Biologists currently hold two very different views, both of which are based on the current state of animals on Earth.

Scholars who hold the view of cold-blooded (ectothermic) animals mainly base their argument that dinosaurs, like reptiles now, belong to relatively lower animals, and crocodiles, frogs, and snakes are typical cold-blooded animals. The body temperature of these animals rises and falls with the change of external temperature, which can save the consumption of physical energy, do not need to have a strong heart to maintain blood circulation, and do not need to have sweat glands on the **, sweat when encountering high temperatures, and are used to maintain a constant temperature of all parts of the body. Most cold-blooded animals have the property of "hibernating", find a cave with a suitable temperature to prevent the body temperature from dropping below 0, otherwise it will freeze to death.

As a result, other scholars have proposed that dinosaurs were "warm-blooded" animals with a constant body temperature, just like elephants today. According to the theory of evolution, there is a dinosaur that is the ancestor of flying birds. You must know that dinosaurs also lay eggs, and like birds, recent excavation of dinosaur fossils found traces of soft tissue feathers, while birds are warm-blooded animals, with a constant body temperature, and their feathers are to keep out the cold.

This doctrine also seems to make sense.

Were dinosaurs cold-blooded, or warm-blooded? The jury is still inconclusive. No one can justify it, but this topic is very important and crucial to the life and extinction of dinosaurs, and people are waiting to unravel this "natural mystery"!

Yes, except for birds and mammals, which are homeotherms, the rest are ectotherms (cold-blooded).

Probably not?!

The earth has four seasons, if the dinosaurs were colder animals, wouldn't they hibernate in winter? If a comet does hit the ground, I'm afraid these hibernation sites should be able to retain some dinosaur species, right?

There are many species of dinosaurs, and their biology can only be inferred from a limited number of fossils. Some scientists believe that at least some dinosaur species may have been homeothermics, and their reasoning is that some dinosaurs could move upright and move far from the ground, indicating that they no longer needed heat from the terrestrial environment; If they are ectotherms, then they should be able to regulate the metabolic level of the body and hibernate in areas with severe winter temperatures, but animals that are too large will encounter physiological insurmountable obstacles when hibernating; If dinosaurs and crocodiles were both ectotherms in terms of physiological mechanism, then there is no way to explain why the dinosaurs were all extinct while the crocodiles survived.

In any case, dinosaurs are by no means reptiles in the sense of a crocodile, and although the two are similar in appearance, this is not a reason to confuse them, just as dolphins are like fish, but by no means fish.

Dinosaurs were reptiles, and these animals were cold-blooded, and their body temperature was related to their environment, not homeotherms.

I haven't seen a dinosaur, I don't know, but I can know that dinosaurs are animals

For us dinosaur lovers, mature dinosaurs are definitely kings, but small dinosaurs are not counted. It should be noted that dinosaurs only lived on land and were the kings of land. Aquatic reptiles like dragons are the kings of the water, and reptiles like the sedan chair of the winged snake and pterosaur are the kings of the air.

Human, what is it without **?

I don't think so, the most powerful thing should be people!

Is there still it now?。。 No matter how powerful it is, it's useless, and it's not extinction.

Not in Chinese myths and legends, the dragon is a supernatural animal, with shrimp eyes, antlers, bull's mouth, dog nose, cat's whiskers, lion's mane, snake tail, fish scales, eagle claws, and nine animals in one. The ancestors of the Chinese nation, Emperor Yan and the Yellow Emperor, the legend and the dragon have a close relationship, "the Yellow Emperor Dragon Xuanyuan Dragon Figure out of the river" ("Bamboo Secretary Year"), according to legend, Emperor Yan was born for his mother to sense the "dragon head", and turned into a red dragon after death. Therefore, the Chinese call themselves "descendants of the dragon".

Dinosaurs were a group of animals that lived between 235 million and 65 million years ago and were able to walk upright with hind limbs supporting their bodies, and dominated the world's terrestrial ecosystems for more than 160 million years. Most of the dinosaurs have gone extinct, but the descendants of the dinosaurs, the birds, have survived and survived to this day. In colloquial language, dinosaur refers to ugly women.

The word "dinosaur" has two meanings in the dictionary: a group of ancient animals that lived hundreds of millions of years ago and are now extinct; Contemporary women who are not good-looking.

Did the dinosaurs go extinct? The bird is not its descendant. 66 million years ago, due to a mysterious catastrophe, the dinosaurs suffered a catastrophe.

Not completely extinct, but evolved into some modern animals.

The Jurassic is over, and the dinosaurs are still there! Do you feel the same way?

Hello, dinosaurs are located between reptiles and birds in the evolutionary sequence, its previous reptiles are ectotherms, and the birds after it are homeotherms, so the body temperature of dinosaurs has always been controversial, a recent study on the fossilized feces of Tyrannosaurus rex found intact muscle cells in it, which shows that meat stays in its stomach for a short time, and ectotherms like crocodiles only eat once in a long time, and the food stays in their bodies for a long time and can be completely digested, so scientists speculate that dinosaurs may be homeothermsLike us, we need a lot of continuous food to maintain body temperature, but I personally think that since the dinosaurs are in the middle of evolution, this is likely to be the case, some species are homeothermic, some are metathermic, and some species are affected by the outside world but are within a certain range.

Yes. Although dinosaurs were previously thought to be cold-blooded lizards, recent research suggests that dinosaurs are more similar to birds and should be counted as a separate class.

Through the discovery of dinosaur heart fossils, dinosaur feather traces, and dinosaur respiratory systems, it is entirely possible that dinosaurs were warm-blooded animals. Dinosaurs had a bird-like heart, feather-like feathers, and a bird-like respiratory system and air sacs, and birds were warm-blooded.

Many of the dinosaurs were agile and could walk upright. Presumably warm-blooded, as they exhibit characteristics that are completely similar to those of today's birds.

It seems that dinosaurs metabolized much faster than the average cold-blooded animal.