Malayan Porcupine, Kaeng Krachan National Park, ThailandI spent a few nights camping in Thailand’s Kaeng Krachan National Park. On one of those nights, a Malayan porcupine stopped by for a visit. This image gives a good look at those quills, which are actually hollow, hardened hairs made of keratin. Nikon D810 with Nikkor 70-200mm lens (at 155mm) ISO 500, f/9 at 1/250th of a second, two Nikon SB-900 flash units.