Science Forums 2

[Boerseun]

To begin with, I'd say two eyes is probably the norm. It's the simplest and easiest way to achieve stereoscopic vision. To illustrate, just think of all the unrelated animals (insects, reptiles, mammals etc.) who've adopted this solution.

I'd also say that a head is a fairly common feature, with the eyes attached to the mobile head so that the animal can see around itself without actually having to turn the body. And the brain should be close to the eyes to speed up reflexes. As is the solution on Earth!

It seems as if we're a pretty common lot on Earth!

Any more ideas?