Except in films. They follow the same natural laws but conditions differ on each planet:
“Combined, the staggering planetary diversity and the historic contingencies for life’s evolution have an amazing consequence: there cannot be two planets with identical life forms. Furthermore, the more complex the life form, the lower the odds it will be replicated — even approximately — in another world.
It follows that we are the only humans in the Universe. Yes, there could (at least in principle) be other biped intelligent species with left-right symmetry out there, but they will not be like us. – MARCELO GLEISER, “WHAT IS LIFE LIKE ELSEWHERE IN THE UNIVERSE?” AT BIG THINK (DECEMBER 22, 2021)”
Star Trek featured many extraterrestrial beings who are really just dress-up humans — and was all the better a series for that. If the extraterrestrials were completely different from humans, mentally and emotionally, because of different planetary developments, the story might fall apart. In science fiction, we need the extraterrestrials to be enough like us that the interactions make sense. That’s just good storytelling:News, “Physicist: Why extraterrestrials couldn’t look much like us” at Mind Matters News
Takehome: Marcelo Gleiser explains, there is a “staggering diversity of worlds” out there and that diversity would shape life forms in many different ways.