Discuss how zoos have evolved over the past 50 years to become conservation centers. Incorporate the role of zoos in educating the public into your response. Discuss some of the economic pressures faced by zoos—namely space, capacity, and resources—that can affect their conservation efforts. How does a species get on the Endangered Species List? Take a virtual trip to the zoo using one of the links below and observe at least one of the endangered species. Make your own ethogram. An ethogram is a graph or chart of animal behavior that is used to compare certain behaviors that can be observed while animals are in captivity. Choose one animal from the webcam links above and observe its behavior at several different times during the day or over the course of several days.