I just thought you might want to warn others to check their belongings and be aware that some of the animals they might have brought back with them could be dangerous. However, encroaching urbanization has changed the rules somewhat. All this does is tell them that you are a prey item. Aside from that, you got to see a magnificent specimen of a normally reclusive higher-level predator necessary to check other fecund species. Hike in small groups rather than alone.
Persons running or moving rapidly are at higher risk.
Keep children under close control, preferably in view just ahead of you. Be alert to your surroundings, especially in dense cover and when sitting, crouching or lying down. Watch for cougar tracks and signs. Cougar scat is about the size of a large dog's scat and usually contains large amounts of hair. Do not approach cougar kittens.