The park features dry evergreen forest, mixed dipterocarp forest, and deciduous dipterocarp forest with tree species like Pterocarpus macrocarpus, Shorea siamensis, and Xylia xylocarpa var. kerrii. It is home to wildlife such as boars, deer, barking deer, rabbits, squirrels, gibbons, and civets. Phra Viharn National Park features interesting sights including: