Even though it was only, i think 2 creatures, i really enjoyed seeing native wildlife being used in Halo Reaches campaign. It would be equally awesome to include that into Halo 4 as well. Perhaps another “Keep It Clean” achievement?
I’d like to see what kind of creatures were native to Forerunner worlds. 
Except that this time, for “Keep it clean” we hunt some crazy, dangerous creatures!
> I’d like to see what kind of creatures were native to Forerunner worlds.
Read some of the books. Although i cant recall anything about the inhabitants of a forerunner world. I am reading halo primordium and it talks about all the different species and creatures that the libarian collects on the halo’s.
> Except that this time, for “Keep it clean” we hunt some crazy, dangerous creatures!
Very nice idea. I would to see some of the creatures utilized in the campaign as weapons or transport.
> This would be a good opportunity to add the blind wolf ! 
>
> Blind wolf
We better be able to ride them as promised.
Bring Porky and Squirrel back!
Props if you know where they are from.
And the monkey family!