Animals by the Numbers Teacher Sheet

Animals by the Numbers Teacher Sheet


Have your students ever thought about all the differences and similarities among the animals species on Earth? They'll get a chance to learn some interesting facts about animals in the book, Animals by the Numbers.

Define Terms

A species is a class of individuals having common attributes and designated by a common name.

An infographic is a chart, diagram, or illustration (as in a book or magazine, or on a website) that uses graphic elements to present information in a visually striking way

This is the amount of living matter (as in a unit area or volume of habitat).

Scale is a distinctive relative size, extent, or degree.

A decibel is a unit for expressing the relative intensity of sounds on a scale from zero for the average least perceptible sound to about 130 for the average pain level.

Toxic means containing or being poisonous material, especially when capable of causing death or serious debilitation.

A venomous animals is capable of producing venom in a specialized gland and inflicting injury or death.

Extinct means no longer existing.

This is the act, process, or an instance of migrating.

All from Merriam-Webster

Reading Questions

What are the two groups that scientists often divide animals into?
Animals are often divided into vertebrates and invertebrates. 

What is the estimated number of animal species?
It is 1,397,250 animal species. 

Out of the animal species, what is the largest group? How does the graphic help you understand this?
The largest group is insects. Answers may vary for the second part of the question. Encourage your students to explain their answers.

What are some of the largest animals alive today? How about in the past?
Some of the largest animals alive today are the blue whale and the whale shark. Some of the larges animals alive in the past include the Mososaur and the Megalodon.

What are some of the smallest animals alive today? How about in the past?
Some of the smallest animals alive today are the dwarf goby and Amau frog. One of the smallest animals alive in the past was the Titanboa.

Even though elephants are the largest land animals, they only make up about 2 million tons of the earth's biomass whereas termites make up about 700 million tons. Why do you think that is?
Answers may vary for this question. Encourage students to explain their answers.

What is the fastest animal? What is the slowest?
The fastest animal is the peregrine falcon while the slowest is the Australian tiger beetle.

How many hours of sleep do humans normally get compared to other species? How many hours do you usually sleep each night?
Humans usually sleep about 8 hours each day while the brown bat can sleep up to 20 hours and the giraffe can sleep as little as 2.5 hours.

Why do you think smaller animals tend to have faster heart rates than larger animals?
Students' answers may vary for this. Encourage them to explain their answers.

What are some of the animals that have horns or antlers? Why do you think they have horns or antlers?
Some animals with horns or antlers include deer, elk, white rhinoceros, and the Watusi bull. They have horns or antlers for protection or to use in battles over mates or territory.

Why do you think the author chose to depict tongue lengths with two different graphs?
The two different graphs provide different information about the length of the tongues. One states its actual length while the other shows its length compared to the body size of the animal.

Are you surprised by how loud some of the animals depicted can be? Why or why not?
Answers may vary. Encourage students to explain their answers.

Why do you think the author chose to use the flow chart kind of graph to look at how an armadillo makes decisions?
Answers may vary. Encourage students to explain their answers.

What is the difference between poisonous animals and venomous animals?
Poisonous animals have toxins in their flesh and skin while venomous animals inject toxins with stings, teeth, or spines.

What animal appears to be the deadliest for humans?
Mosquitoes appear to be the deadliest animal for humans.

What are the highest and lowest places on Earth that animals can go? What animals go to those places?
One of the highest is 37,000 feet, where the Rupell's vulture can fly. One of the lowest is the Mariana Trench, where the supergiant amphipod lives.

What are the hottest and coldest places that animals live? What animals live there?
The hottest is at 176 degrees F, where the Pomeii worm will place its tail in hot water straming from undersea volcanic vents. One of th coldest is -60 degrees F, in Antarctica, where emperor penguins stand in the open.

Some animals migrate over vast distances. Why do you think they do that?
Sudents' answers may vary. Encourage them to explain their answers.

What is a mass extinction? How many have there been over the centuries?
A mass extinction is when many kinds of animals die off in a short period of time. During each of the mass extinctions, over half of the animal species alive at the time became extinct. There have been five mass extinctions in the past and one is happening right now.

What kinds of things are threatening endangered species? Do you think there's hope for saving them?
Habitat loss, collecting, hunting/poaching, and fishing/poaching are all threats to endangered species. Students' answers will vary for the second question. 



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