Actually they do.
If they do we have not found them.
We live on Earth. The only planet that has been proven to sustain carbon-based life.
So far we have found no planet other than Earth that is suitable for human life.
Yes of course, there are Scorpians, Lizards, many type of beatle and even gerbils that live in the desert.
BECAUSE we are the only planet which has water and atsmophere the moon has no atmoshere,we can not live on the sun to HOT,We can not live on any others because of atmoshere!
Because there are more species of insect than anything else on this planet and they outnumber all other species and can live in any environment
Why SHOULDN'T they live ? Every species of animal, bird, fish and reptile on the planet has the same right to exist as any other !
No, Earth is a planet orbiting the Sun.
Without extensive support and equipment, not in our solar system
Since we live ON the Earth, all satellites WE have sent have been sent FROM the Earth, and circle around it.
It isn't currently known whether there is ANY type of life outside of planet Earth.
As of now, no humans have been confirmed to be living on any new planet outside of Earth. The search for habitable planets and potential colonization is an ongoing area of research and exploration in the field of astronomy and space exploration.