Animal Groups & Survival Lab

Classify vertebrates, discover how adaptations help animals survive in different habitats, and simulate natural selection by watching a beetle population change over generations.

Guided Experiment: Animal Adaptations Investigation

How do you think an animal's characteristics help it survive in its environment? Which beetle color do you predict will survive more rounds in the leaf environment?

Write your hypothesis in the Lab Report panel, then click Next.

Controls

Explore the three tabs to classify animals, discover survival adaptations, and simulate natural selection.

Sort Animals into Groups

Click an animal to select it, then click a group bin to place it there. Sort all 12 animals.

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Reference Guide

The Five Vertebrate Groups

Vertebrates are animals with a backbone. Scientists organize them into five major groups based on shared body features.

  • Mammals - warm-blooded, have fur or hair, nurse young with milk
  • Birds - warm-blooded, have feathers, lay eggs
  • Reptiles - cold-blooded, dry scaly skin, lay eggs on land
  • Amphibians - cold-blooded, moist skin, start life in water
  • Fish - cold-blooded, breathe through gills, live in water
Key idea: sorting animals by shared traits helps scientists predict how an animal lives and behaves.

What Is an Adaptation?

An adaptation is a body feature or behavior that helps an animal survive in its environment. Adaptations develop over many generations of natural selection.

Examples of structural adaptations include thick fur for cold climates, webbed feet for swimming, and sharp claws for catching prey. Behavioral adaptations include migration, hibernation, and camouflage.

The better an adaptation fits the environment, the better the animal's survival chances.

Camouflage and Survival

Camouflage is a type of adaptation where an animal's color or pattern blends with its surroundings. This makes it harder for predators to see the animal.

When an environment changes, camouflage that once helped can become a disadvantage. Animals whose color no longer matches their surroundings are spotted more easily by predators.

The peppered moth is a famous real example: industrial pollution darkened tree bark, and dark moths survived better while light moths became more visible.

How Environments Change Populations

When an environment changes, some individuals survive better than others. Survivors reproduce and pass their helpful traits to offspring. Over many generations, the population shifts toward individuals with those traits.

This is natural selection: nature "selects" individuals whose traits fit the current environment. It explains how populations change over time and how new species can form.

  • NGSS 3-LS4-2: evidence that environments change and affect organisms
  • NGSS 3-LS4-3: how adaptations improve survival chances