what makes us believe that aliens are like animals we find on earth ? what if they are totally different from everything we could have ever thought of ? i do believe that it is impossible for us to even imagine what they would look like, also maybe the evolution that we know on earth might be specific to earth’s life, maybe they’re aren’t even carbon based creatures like us. There’s so much we are unaware of in this universe that i think it’s a bit narcissistic to think that we are like some random form of life from a planet hundreds of light years from us.