All living creatures in our planet have the same immune system,so is it possible to make a better one? Would you mind

Question: All living creatures in our planet have the same immune system,so is it possible to make a better one? Would you mind describing an idea of how would a perfect immune system would look like?
- Keywords:
  animals,
  better immune system,
  living,
  planet
Asked by Peter to Noel on 10 Mar 2015.
- Noel Carter answered on 10 Mar 2015:
  
  It’s pretty amazing as it is. I don’t think I am clever enough to think of an improvement!

Question: All living creatures in our planet have the same immune system,so is it possible to make a better one? Would you mind describing an idea of how would a perfect immune system would look like?