all except for one ... the cougar, because they considered it to have no human qualities.
Because it was a perfect hunting animal?
Or perhaps, because it would prey on the Natives?
The Natives would associate a positive quality to each animal they anthropomorphized, like the Raven = intelligence, the Bear = strength, the Salmon = stamina, etc.
With its terrifying attacks without warning - something Natives surely would have encountered over the years, living so close to the land - the cougar was probably seen as having nothing positive to emulate.