Cougars are stealthy animals capable of slipping through the woods or over desert sand without making a sound. In fact, unless a person works with or tracks cougars, most people will never see the big cat let alone hear one.
But they do make some interesting sounds. While waiting to be fed one day, Mac, a long-time resident of Big Cat Rescue in Tampa, Florida was particularly vocal. A cameraman happened to be in the area and recorded what was going on. Check it out at http://bigcatrescue.org/mac/.