Seek shelter and raise your body temperature by drinking warm liquids. When traveling in the backcountry, carry proper clothing and don't journey farther than you can safely return if conditions turn frigid. Ticks Watch out for ticks, especially in spring and early summer, because they may carry a variety of diseases, including Rocky Mountain spotted fever and Lyme disease. If you are bitten, check the area for a rash and watch for flulike symptoms. If these symptoms appear, consult a doctor.
All wildlife can be dangerous, especially if approached too closely.
Give all animals, especially those with young or near animal carcasses, a wide berth. You must store your food in bear-proof containers, per park regulations. Although bear-human encounters are rare, all bears are dangerous and should be avoided. Mountain lion encounters are also uncommon, but the big cats have been known to attack pets and occasionally humans, especially young children. The park newspaper and visitor centers can provide more information.