Latrans
Aracorn, obviously, come on get your life together.
I actually like Kaa the best.
Ah... Aracorn! That's great!
All are good names. You corn also go Acorna(the author of the Pern series had a series by this name).
Or Alicorn... like the winged unicorn, or as reference to the unicorn's horn...
or Naga... as ref. to mythical snake, from which Nagini was based...i believe...
or look up the scientific name of the corn snake and opt for a shortened version of it...
or any dragon-related term (Like Wurm, Draco, Drake, Draconus, Dracona, etc... )