comma before 'or' [serial comma]: as Pumas, Cougars, or Monsters

[wizard8451]

Could you say "Moutain lions, commonly referred to as Pumas, Cougars, or Monsters, are soon to be extinct", or would you take out the commas and use 'or' instead?

 

[Suehil]

It's fine as it is, except that there should be no comma before '...or monsters'