What would the world be like without dangerous animals?

This is very difficult for us to imagine, since there are many dangerous animals.

If a meat eating dangerous animal was not dangerous, it would not be able to catch its prey. As a result it would die. Eventually there would be no more meat eating animals in the world.

The world would be populated with plant eating animals. Since they would not be in danger from being eaten, more and more of these animals would populate the world.

A point could come when there was not enough food for them to eat and they to would start to die.

If animals were not dangerous to help protect their young, then the young could die. As a result
less animals would mature into adults and so the population would reduce.