Oral isotretinoin is the best treatment for patients with moderate acne in whom antibiotics are unsuccessful and for those with severe inflammatory acne. Dosage of isotretinoin is usually 1 mg/kg once/day for 16 to 20 wk, but the dosage may be increased to 2 mg/kg once/day.
Lots of different predators will prey upon other predators: Golden eagles are well known predators of smaller hawks. Collared lizards will eat other lizards. Crocodilians will feed on other predators, such as monitor lizards, snakes and even lions that come to the water to drink. Many snakes will eat other snakes. Some frogs, like the horned frogs of South America and the African bullfrog, readily feed on other frogs.
Wheel bug. Predators are animals that eat other animals, called prey, and are usually fairly active because they have to hunt their prey. Predatory insects eat many pest insects and are an important part of a natural control program for the home garden. The most common insect predators are in the beetle, true bug, lacewing, wasp, and dragonfly families, as well as some flies such as flower fly.