4 ms·

a dozen out of millions of species is not "pretty common"

• JoeAltmaier 5y ago
  Many convergent evolution paths led to the same similar form, in time. That was the point. If the environmental pressures are similar, the forms may be similar.
  • asah 5y ago
    100.0% of spacefaring earth creatures are bipedal /s
    • excitom 5y ago
      Dogs have been send into space
      • asah 5y ago
        They were sent, not by choice = not spacefaring! /s