| Hemiphractus | |
|---|---|
| Hemiphractus bubalus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Anura |
| Family: | Hemiphractidae |
| Genus: | Hemiphractus Wagler, 1828 |
| Diversity | |
| See text | |
| Synonyms | |
| |
Hemiphractus is a group of frogs in the family Hemiphractidae. People call them horned treefrogs in English. These frogs are brown in color. They have pointed noises. They are awake at night. They live in forests in northern South America (Amazon east as far as Tapajós, Chocó-Magdalena and northern Andes) and Panama, where people find them on the ground or on plants.
Hemiphractus have strong bodies. These frogs have thick pieces at the ends of their noses and bumps on their eyelids. There are bony bumps on their heads. They have teeth. Females grow larger than males, and depending on exact species the snout–to–vent length generally is between c. 2.5 and 8 cm (1.0–3.1 in).

Scientists think Hemiphractus eat other frogs and that this is why they live where other frogs live. People have also seen wild frogs eat lizards, large insects, and snails. When people keep the frogs, they see them eat geckos, baby mice, and earthworms.
If an animal that wants to eat the frog scares the frog, the frog will open its mouth, which has bright yellow skin inside. The frog can also bite the animal.
Female frogs carry their eggs on their backs. The eggs stick to the mother's back with gel. This frog hatches out of its egg as small frog, not a swimming tadpole. It is not easy to keep these frogs in buildings or zoos, but some places do.
These species are in the genus Hemiphractus .