Walking through desert terrain presents a particular set of challenges not found in other landscapes. Even if you're just going for a casual walk, you'll need to look out for cactus plants with needles that can attach to your clothing and pierce your skin. Cacti such as the jumping Cholla and teddy bear cactus have dozens of thin, hair-like needles that quickly adhere to anything that brushes by the plant. The more threatening prickly pear cactus has thicker, spiny needles that can cause a dermatological reaction if the injured person doesn't immediately remove the cactus needle.
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