A deer is eating grass when a twig snaps behind it. The deer freezes and lifts its head. Which order describes what happened?

A bat flying in the dark makes short, high calls as it closes in on a moth. What information is its brain processing to find the moth?

A change in the environment that an animal can sense, such as a loud noise or a flash of light, is called a ___.

A cat's whiskers brush the sides of a narrow gap between two boards, and the cat backs out instead of pushing through. What did the brain do with the information from the whiskers?

In total darkness, a barn owl still catches a mouse rustling through dry leaves. Which sense is giving the owl's brain the information it needs?

An animal's behavior is the way it responds to information from its senses.

A dog was stung by a bee near a flowering bush. Now, when the dog hears buzzing there, it walks away instead of sniffing. What best explains the change in its behavior?

A skunk lifts its tail and sprays, and a coyote several steps away turns and leaves without ever touching the skunk. Which sense gave the coyote its information?

Information collected by an animal's senses travels to the ___, which processes it before the animal responds.

A rabbit feeding in a field notices a hawk's shadow sweeping across the ground and dashes into its burrow. What sense gave the rabbit the information, and what was its response?

A student says that when a shadow passes over a frog, the frog's leg muscles decide by themselves to jump. Why is that explanation wrong?

A moth's feathery antennae pick up a faint scent drifting across a field. What job do the sensory receptors in the antennae do?

A loud clap sends a flock of pigeons flying up, while a dog sitting nearby only turns its head. What does this show about how animals behave?

A dog lying on a rug lifts its head and turns toward the kitchen when its owner whistles from that room. In this example, what is the dog's response?

A raccoon feels a slippery fish squirm between its paws while washing food in a stream. The touch information reaches its brain. What is the brain's job once it receives that information?

A squirrel burying an acorn stops the moment a car horn suddenly blares nearby and darts up a tree. Which sense gave the squirrel the information about the horn?

A hawk circles high above a field and quickly dives toward a mouse moving through the grass far below. Which sense allowed the hawk to find the mouse from so far away?

A bear wakes from its den and heads straight for a bush of ripe berries hidden behind rocks far down the hillside. The wind is blowing up the hill toward the bear. Which sense is giving the bear this information?

A turtle pulls its head into its shell the instant a shadow passes overhead, before it even sees what caused it. What must have happened for the turtle to react so quickly?

A raccoon pats a metal wall lightly with its front paw before trying to climb it. What information can its paw send to its brain?

A goat once ate a bitter weed in a certain corner of its pasture and got sick. Now it avoids that corner entirely, even when fresh grass grows there. What best explains why the goat avoids that spot?

A herd of zebras is grazing calmly when a lion suddenly roars from behind a bush. The zebras' ears turn toward the sound and the herd bolts across the plain. In this example, what is the stimulus?

A meerkat standing guard spots a hawk's shadow sliding across the sand and immediately gives a sharp warning call before diving into its burrow. In this example, what is the meerkat's response?

A fox hears rustling leaves and at the same moment smells rabbit scent drifting on the wind. Using information from both senses together, the fox creeps forward instead of running away. What does this scenario show about the brain?

A wolf pup resting near its den lifts its head the moment the pack's howl echoes across the valley from a ridge, long before the pack comes into view. Which sense let the pup detect the howl?

A chameleon's eyes swivel independently, tracking a fly's shape and movement as it flits between two leaves, before the chameleon's tongue shoots out to catch it. What kind of information are the chameleon's eyes sending to its brain?

A hedgehog curls into a tight ball the instant a twig brushes against its snout, even in complete darkness. Which sense organ felt the twig touching it?

A prairie dog standing at its burrow hears a hawk's cry from far overhead and immediately dives underground, seconds before the hawk swoops close. Which describes the correct order of what happened?

A cat lying in a dim room walks out into bright sunlight, and within seconds the black centers of its eyes shrink to thin slits. What best explains why the cat's pupils get smaller?

An opossum smells a skunk with its nose and then quickly covers its face with its paw. Which body part carried out the response?

A heron standing motionless at the edge of a pond suddenly stabs its beak into the water, catching a fish gliding just beneath the surface. Which sense mainly gave the heron this information?

A raccoon and a crow both find the same piece of unfamiliar food near a campsite. The raccoon sniffs it closely before touching it, while the crow pecks at it right away. What does this show about how animals behave?

Smoke drifts into a clearing where deer and rabbits are feeding, and the deer bolt away. Why is running from smoke a helpful response for the deer?

A rattlesnake's tongue flicks out and picks up chemical particles drifting near a burrow where a mouse recently passed. After the snake's sense organs detect this information, what happens next?

A dolphin swimming in murky water clicks and listens for echoes bouncing off nearby rocks, using the returning sound to build a picture of what is around it. What does the dolphin's brain do with the sound information it receives?

An owl swoops down in a dark forest and catches a mouse it heard rustling under the leaves. A person standing nearby would not have heard the mouse at all. What does this show?

A dog with a stuffy, congested nose sniffs its food bowl but shows little interest and barely eats, even though the same food excited it the day before. What best explains the dog's change in behavior?

Pigeons have eyes on the sides of their heads, so they can see in almost every direction at once. How does this help the pigeons in this picture?

A woodpecker that brushes against a hidden wasp nest while pecking a tree jerks its head back a split second later, not instantly. This shows that sensory information takes a little time to reach the brain and be processed before a response happens.

A prairie falcon nesting on a cliff ledge hears a sudden clap of thunder rolling in the distance and immediately tucks its wings tight against its body, flattening down against the rock. In this example, what is the falcon's response?