Tie Shan then slowly climbed to Fei Ge's side, he had already ordered the cavalry to put on heavy armor and prepare for battle, and when he reached Fei Ge's side, he lay on the ground and observed the enemy situation with him.

"Ancestor, what are those guys?" Iron Mountain also saw the silhouettes of the monsters that had run recently, and knew that they had never seen such creatures before, so he immediately asked.

"These creatures seem to be related to the dinosaur family, their heads look more like dinosaurs than other mammals, look at the rows of fangs in their mouths, they are very similar to the dinosaur family, mammals generally have two front teeth, they are different." Fei Ge explained as he watched.

"Could it be that they are also one of the descendants of Allosaurus?" Tie Shan's brows tilted upward, and he said with some surprise.

"It should be one of them, the big chief once said that there is a clear difference between mammals and dinosaurs, they are viviparous animals, and they need the mother to breastfeed their offspring in order to feed the big offspring, while our dinosaur family is oviparous, the offspring hatches directly from the egg, and then brought up by the big dinosaur, and without breastfeeding, the little dinosaur was born with teeth and can eat directly." Fei Ge explained.

Fei Ge is right, the dinosaur family has always maintained an oviparous reproduction mode, the difference is that the number of eggs they lay each time has changed greatly, in the past, a female dragon could produce more than a dozen eggs at a time, and after hatching, the baby dragon survived on its own, and more than 90% of them could not survive to adulthood.

At this time, the dinosaurs lay almost only one egg per litter, and rarely had two or more eggs, because they were the same as mammals. It has evolved into a parenting style in which parents raise children to ensure that the survival rate of children is greatly improved. So too many baby dragons are born, and they can't take care of them at all. As in some large mammals, fertility has declined.

Another important change is that dinosaurs have evolved into homeotherms, animals that grow hair in winter and have a constant body temperature, they are no longer cold-blooded like their ancestors, and can survive in all kinds of climates. Coupled with the smaller size, these points are the biggest changes in the dinosaur family.

If you take a closer look at the physical characteristics of the strange creatures in front of you, and the way they breed their offspring, it should not be difficult to draw conclusions. Whether they are ordinary mammals or dinosaur descendants.

The howls in front of them were getting closer and closer, and a large group of creatures were screaming and running quickly, as if something was happening in front of them, and Feigo had been watching carefully to see why they were howling, but it seemed that they had not discovered their own people.

"Ancestor, I saw a few tigers. Running ahead, are those monsters chasing tigers? Soon, Iron Mountain was in another jungle and spotted several tall tigers running fast. And the strange creatures seemed to be chasing after them.

Fei Ge looked in the direction of Iron Mountain's finger and found that they were in the jungle on their left, about three hundred meters away. Sure enough, a few tigers were running to the left, and then look back at the direction in which the monsters were running. Seems to understand.

"It turned out that the monsters were chasing their prey, and they were actually feeding on the tigers. It's not easy. Fei Ge nodded.

"Then shall we kill them and kill them?" Seeing that the monster and the tiger were very close, Tie Shan immediately asked.

Fei Ge groaned slightly, then shook his head and said, "No need, let's see what these guys are capable of." ”

It didn't take much effort to kill these monsters, and Fei Ge wanted to see the strength of the monsters and see how far they had evolved.

Then Fei Ge said: "Iron Mountain, you ordered your men to immediately mount their horses and stand by, and once I give the order, rush forward and intercept those monsters." ”

"Yes."

Fei Ge still wanted Tie Shan to prepare, Tie Shan agreed, and then carefully retreated back to lead his war horse, the armor on his body weighed more than forty pounds, making his actions a little cumbersome.

"Woohoo, woohoo,......。" Soon there were several roars of fierce tigers in front of them, but they did not let out an unstoppable roar, the sound was mixed with a hint of mourning, obviously encountering a strong enemy, a fierce predator on the grassland, and instantly became the prey of others.

"Whoa, whoa......" Soon, the group of monsters appeared after the tiger was born, and before the tiger, there was a sudden burst of strange screams, they were from several treetops.

"Look, another group of monsters have come out of the jungle, and they seem to be in line with them." The wyvern beside him pointed to the jungle and said to Feige.

Fei Ge also saw the new monsters, they were jumping in the direction of the tigers on the big trees, they were fast, and some of them were running on the ground, and those monsters actually held a few thick branches in their hands, waving frequently, and ran towards those tigers.

The tigers, which weighed about two or three hundred kilograms, and were also formidable beasts in the grassland, trembled and ran back and forth in the jungle, but they found that the way ahead of them was quickly blocked by a group of monsters jumping from the branches, and there was no way to escape at this time.

There were five tigers there, and there were a dozen or so monsters standing on the grass in front of them, and the appearance of the monsters made the tigers fearful, but they saw that there was only one possible exit, so after hesitating for a moment, they pounced on the front, trying to escape.

"Whew." The tiger howled and rushed towards a dozen or so monsters, who had branches in their hands, and they aimed at the tiger and began to meet them.

"Whoa." Several monsters howled with branches a few inches thick, and made defiant movements towards the tiger, but instead of running forward, they suddenly turned around and ran a few steps back.

When the tigers saw the monsters retreating, they screamed and pounced in their direction, and a tall tiger opened its mouth and chased after the ass of one of the monsters in front of them.

The tiger suddenly jumped up, it struggled to pounce on the monster's body, its eyes were fixed on the monster's back, it was about to get close to its body, open its mouth to bite down, as long as it knocked down these guys who stood in the way, they could escape, so the tiger used its strength to chase the monster behind.

However, at the moment when the tiger's feet landed, it found that its feet were weak, and it suddenly fell short, and its whole body suddenly stepped on some soft branches and leaves, and its body lost its center of gravity, and then fell downward.

After a "poof", the big tiger fell into a two-meter-deep pit, threw it down, and lay on the ground with its feet facing the sky, screaming in pain. (To be continued......)