Sapo-de-chifre, or Untanha-pequena (Proceratophrys boiei) is a species of frog in the Leptodactylidae family. It is endemic to Brazil. Its natural habitats are subtropical or tropical moist lowland forests in the Atlantic Forest biome. It is threatened by habitat loss. Medium to large size. The coloration on the back varies from gray to brown, decorated with dark brown spots and longitudinal bands, which gives it the power to camouflage himself easily. Males call in soil or in areas flooded during the night. Insectivorous, eating cockroaches, spiders, crickets, beetles, larvae and also occasionally other frogs.