Which preposition to use with cougars

in Occurrences 1%

Article V. The term "fair chase" shall not be held to include killing bear or cougar in traps, nor "fire hunting," nor "crusting" moose, elk or deer in deep snow, nor "calling" moose, nor killing deer by any other method than fair stalking or still-hunting, nor killing game from a boat while it is swimming in the water, nor killing the female or young of any ruminant, except the female of white goat or of musk-ox.

on Occurrences 1%

The cougars on this ranch never molested the foals, a fact which astonished me, as in the Rockies they are the worst enemies of foals.

Which preposition to use with  cougars