A few Siamese crocodiles have recently been found within the park. Some believe the crocodiles were released there while others believe they may indeed be a genuine wild population as this species can be present at higher elevations. This species is not aggressive towards humans and rarely grows larger than 3 m (10 feet.) These can be seen along the river from Pha Kluamai Campsite to Haew Suwat falls, basking on the edge of the riverbank near the 'Beware of the crocodile' signs. If you see a snake, treat it as dangerous unless you know otherwise! Geckos are frequently seen catching insects on building walls and ceilings. Cicadas never stop their scratchy hum.