From Iquitos, visitors can made a sidetrip to the Laguna Quistacochoa where there's a fish hatchery, and a small zoo where you'll see otorongo, Amazon jaguar, the ocelote or small tiger, the sachavaca an animal similar to a tapir, and a great variety of monkeys and different species of reptiles.
Another option is the boat to Pucallpa on the Ucayali River, one of the main Amazon tributaries. From here you can drive to Lima or visit the lake at Yarinacocha. This is a scenic spot, where you can go canoeing, see wildlife and shop for local handicrafts in Puerto Callao.