In this activity, learners explore the behavior of cold-blooded animals by observing what happens when they change a fly's temperature.

Article explaining the basic characteristics of mammals, their diet, reproduction, behavior, conservation concerns, taxonomy, and their evolution. (Published: September 23, 2010)

Learn about birds the only way you can. A bird is a warm-blooded, egg-laying, winged vertebrate that has a body covered with feathers. Find out all about all of the different birds you can here.

California sea lions are warm-blooded coastal dwelling mammals that glide easily through the water with their torpedo-shaped bodies and are propelled by their "winged feet." Use this resource to discover many other unique facts.

How do biologists and zoologists use infrared technology to learn how warm and cold-blooded animals thermoregulate their internal body temperature? Have your students explore this phenomenon using this great lesson plan.

This tutorial by Bill Nye explains why cold-blooded creatures need a warm environment to survive.

This resource provides basic information of the changes that took place during the Permian period as well as the animals that populated the Earth during this time.

Wikipedia, an open-source encyclopedia, provides great information on mammals. Content includes a look at mammal characteristics, origins, classification, and more.

Several articles that trace the chronology of the dinosaur from the Triassic to the Cretaceous. Articles were written to accompany the BBC series, Walking with Dinosaurs.

An overview of mammal characteristics.

Kids learn about the horse including terminology, colors, food, wild horses and more.

Use this site to learn how animals use hibernation, adaptation, and migration to overcome the difficulties of winter.

Lesson plan that allows students to investigate the effect of water temperature on fish behavior. Students measure, collect data, and interpret the results.

An interactive matching game from Quia dealing with animal classifications.