wildlife
Do not feed or touch any of the wildlife as there is the possibility of aquiring the plague from fleas that live on the animals. Be aware of rattlesnakes and always check where you are stepping.
Cougars or "mountain lions" also inhabit the park, but are rarely seen. They look like light brown house cats, but 5-8 feet long including the tail. In the unlikely event that you run into one, don't approach it, and don't run. A cougar expects prey to flee and will react appropriately. Pick up any small children or pets. Make eye contact, spread your arms to make yourself look bigger, and back away slowly. If it approaches you, make noise and throw things at it; let it know that you're dangerous too. If it attacks, don't curl up defensively... fight back.
The park is prime habitat for black bears and it is very likely that you will see one. Stay a safe distance from bears and be careful never to come between a mother bear and her cub. Never leave food in your vehicle or unattended at a camp site. Bear proof containers are provided for food storage at camp sites and trail heads. Safely storing food is required by park regulations and is essential for your own safety and also for the ultimate well-being of the bears. You can find more information on bears in the park, how to deal with a bear-human encounter, and park regulations about bears at the National Park Service web site. (http://www.nps.gov/seki/p...)
Ticks are prevalent in the park and may carry Lyme disease. To avoid tick bites, tuck pants legs into socks and tuck shirts into your pants. If you do find an attached tick, remove it carefully with tweezers and seek medical advice from a ranger or a doctor. If bringing your dog along, make sure to check the dog for ticks after your visit as well.
natural hazards
Poison oak is also present at elevations up to 5000 feet 1,500 m in the park. It causes itching, burning rashes in the affected areas and is easily spread. Most trailheads have a bulletin board with a picture of poison oak. If you come in conatact with poison oak, wash your clothes and the affected areas immediately. A product named Technu found in camping stores and drugstores is good for neutralizing the toxic oils from the plant. Avoid contact with your eyes.
Water from natural sources should be treated or boiled before drinking as it may contain giardia, a protozoa that causes intestinal illness.
Lightning can be a great hazard, especially on rock outcrops, on ridges or in meadows. If a storm approaches, try to get indoors or inside a vehicle. Do not stand under trees or in shallow caves.
crime
Due to the remote nature of Sequoia and Kings Canyon National Parks, it is sometimes the site of illegal marijuana cultivation. If you come across a marijuana farm, immediately leave the area. Do not linger in the area of the farm as the people who plant the farms are often armed and do not take kindly to visitors. Report to park rangers as well as authorities immediately.
driving
Many of the roads in Sequoia and Kings Canyon National Parks are very steep. Use low gears when going downhill to avoid overheating and possible failure of the brakes. Slower traffic must use turnouts to let faster vehicles pass.
Especially in winter, roads can be snow-covered or icy. For up-to-date road conditions, call +1 559 565-3341 then press 9, then 4.
For 24-hour emergency towing, dial +1 559 565-3341, then press 0. In Sequoia NP, AAA service is available 24 hour for out-of-gas, lock outs, jump starts, and minor repairs. Call +1 559 565-4070.