The document summarizes the characteristics, adaptations, and interdependencies of four animals - the Toco toucan, jaguar, green tree frog, and green anaconda. It also describes a symbiotic relationship between trees and bacteria. The Toco toucan has a large bill to reach fruit and coloration that helps it blend in. Jaguars have spots that camouflage them and take refuge in thickets. Green tree frogs change color to match their surroundings. Green anacondas have scales that camouflage them and can stay underwater for 10 minutes without breathing.