Throwing My Hat into the “Humans Are Weird” Thing
So what if all the other alien species evolved from Prey Species? Like, humans show up on the galactic scene and everyone is weirded out by the appearance of this species with eyes on the front of their heads and binocular vision, and crazy good senses of hearing and smell compared to everyone else.
And then it hits them.
They just made first contact with a race of sapient, intelligent Apex Predators. Eventually, after the panic dies down and the other races realize that humans aren’t going to eat them, they realize how good they are under pressure. They can hear and smell things before anyone else, are capable of going days without food if they have to, weeks with very little food. Or, they can pull off these insane feats of accuracy with their binocular vision. Or smell what dinner is from three rooms away, or hear a ship’s system failure before the alarm sounds.