Given that "super-earths" with masses half to three times that of the
earth appear to be common in the habitable zones, I would be inclined to
imagine advanced life on such worlds as being squat with either lots of
legs or very thick short ones.
Maybe a cylindrical body about a meter or so thick and a couple meters
in diameter, a few centimeters above the ground with hundreds of little
feet, equipped with various orifices and tentacles and sensory
projections. We evolved from arboreal creatures and so have opposable
thumbs and color stereoscopic vision and a basic vertical
orientation. More massive planets probably wouldn't offer such an
environment.
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