I believe that life evolved on mars millions of years ago and still exists today but they did evolve in a different way.
They adapt to the hazardous conditions of the planet that exists today and probably most part of them lives deep underground.
LIFE HAS EVOLVED IN A DIFFERENT WAY
For years now researchers have been finding strange creatures on mars surface.
Despite an army of debunkers that talk about Pareidolia "Psychological phenomenon involving a stimulus wherein the mind perceives a familiar pattern of something where none actually exists" some astonishing findings still amazes us today.
Images from the Mars Curiosity Rover have been digitally altered by NASA but if you analyze the images very carefully you can find evidence that life forms on Mars still exist but it has evolved in a very different way and is not comparable to species on earth as we know it.
Below a small selection of strange looking animals.