Zoo Animal Size Sorting Worksheets: Free PDF

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These free zoo animal sorting worksheets help preschool and kindergarten students practice comparing pictures by size.

The four-page printable includes a cover, a small-medium-large sorting mat, and 12 cut-apart zoo animal cards. Children compare the printed pictures and place four cards in each size group. The set features 10 different zoo animals, with a monkey and zebra appearing in two different sizes to encourage careful observation.

What Is Included in the Zoo Animal Sorting Printable?

This free zoo animal size sorting PDF contains four landscape pages:

• One decorative cover page
• One sorting mat labeled Small, Medium, and Large
• Two pages containing 12 cut-apart animal picture cards

The animal cards feature a koala, monkey, peacock, giraffe, flamingo, gorilla, sloth, zebra, elephant, and lion. The monkey and zebra are each shown twice at different printed sizes, giving children an extra reason to look closely instead of sorting by an animal’s name alone.

That small design choice makes the activity more valuable. A child cannot assume that every monkey belongs in the same category; each picture must be compared with the others.

Supplies Needed:

You only need a few basic supplies for this animal sorting activity:

• The printed zoo animal worksheets
• Printer paper or cardstock
• Child-safe scissors
• Glue stick, if completing the worksheet permanently
• Laminator and hook-and-loop dots, optional for repeated use

Cardstock is especially helpful if you plan to use the activity in a preschool center, on a homeschool shelf, or in a busy binder. Regular copy paper works well for a one-time cut-and-paste worksheet.

How to Print the Worksheets

Download the PDF and print the activity in landscape orientation. Select Actual Size after the printable has been updated to standard US Letter dimensions. Avoid selecting a borderless enlargement, which may cut off the headings or edges of the animal cards.

If you are using the current oversized version of the file, choose Fit or Scale to Fit in your printer settings. This temporarily reduces the pages to fit standard paper. See the printable update checklist below before republishing the activity.

For a reusable classroom activity, print the sorting mat and animal cards on cardstock, laminate the pages, and cut out the cards. Add hook-and-loop dots to the backs of the cards and to the inside of the columns, if desired.

How to Use the Zoo Animal Sorting Worksheets

1. Introduce the size words

Point to the three headings on the mat and read them together: small, medium, and large. Ask your child to show the smallest and largest objects nearby. This quick warm-up connects the vocabulary to familiar items.

2. Cut out the animal cards

Have the child cut along the card outlines. Younger preschoolers may need an adult to cut the cards in advance. Older preschool and kindergarten students can cut them independently for additional fine-motor practice.

3. Compare the pictures

Place all 12 cards where the child can see them. Encourage the child to compare two or three pictures at a time. Helpful prompts include:

• Which picture takes up the least space?
• Which one looks bigger?
• Can you find another picture about the same size?
• Is this picture small, medium, or large compared with the others?

4. Sort the cards

Place each animal card beneath the matching heading. Children can move the cards until they are satisfied with all three groups. If the pieces have been resized to fit the mat, they may glue four cards into each column. Otherwise, use the mat as a reusable sorting surface and remove the cards when finished.

5. Review the groups

Count the cards in each column and discuss the results. There should be four small pictures, four medium pictures, and four large pictures. Ask the child to explain one choice using a complete sentence, such as, “I put the elephant in the large group because its picture is bigger than the peacock picture.”

Zoo Animal Sorting Worksheet Answer Key

The answers are based on the relative sizes of the printed pictures in this specific set.

Small animal pictures

• Koala
• Small monkey
• Sloth
• Realistic zebra

Medium animal pictures

• Peacock
• Giraffe
• Cartoon zebra
• Larger monkey

Large animal pictures

• Flamingo
• Gorilla
• Elephant
• Lion

If a child places a borderline picture in a different group, ask for the reasoning before correcting it. Comparing sizes involves visual judgment, and explaining an answer can be as useful as finding the intended category. Then place the pictures side by side and use the answer key to show how the set was designed.

What Children Learn From This Sorting Activity

Although this free printable is simple to prepare, it supports several early-learning skills at once.

Visual discrimination

Children notice how pictures differ in height, width, and overall area. This kind of careful visual comparison also supports later work with shapes, letters, numbers, and patterns.

Size vocabulary

The activity gives children a concrete way to use the words small, medium, large, smaller, larger, smallest, and largest. Adults can model comparison sentences while children sort.

Categorization and reasoning

Sorting asks a child to identify a rule and apply it consistently. Because the monkey and zebra appear in more than one printed size, children must focus on the relevant attribute instead of grouping matching animals together.

Fine-motor development

Cutting the cards, moving small pieces, and gluing them into position strengthen the hand muscles and coordination used for writing and other classroom tasks.

Counting and one-to-one correspondence

After sorting, children can count the pictures in each group and confirm that every card has been used exactly once.

Ways to Adapt the Activity by Age

For younger preschoolers, pre-cut the cards and begin with only six pictures—two from each size group. Add the remaining cards when the child understands the sorting rule.

For pre-K students, use all 12 cards and provide verbal prompts as needed. Ask children to compare pictures side by side before selecting a category.

For kindergarten students, have them complete the sort independently and explain two or three of their choices. Extend the lesson by asking them to arrange all 12 cards from smallest to largest or draw one small, one medium, and one large animal.

Adult supervision is recommended whenever children use scissors or handle small laminated pieces.

Turn the Printable Into a Reusable Learning Center

Laminate the mat and cards, then store the pieces in a labeled envelope or zip-top bag. Place the activity in a zoo-themed preschool center, morning basket, quiet-time bin, or homeschool workbox.

You can also use the cards for these quick extension activities:

• Memory challenge: Let the child study the sorted cards, close their eyes, and identify which card you removed.
• Ordering activity: Arrange three to six cards from smallest to largest.
• Matching game: Pair the two monkey cards and the two zebra cards, then describe how each pair is alike and different.
• Vocabulary practice: Name each animal and describe its color, body covering, movement, or habitat.
• Graphing prompt: Count how many pictures have four legs, feathers, or black-and-white markings.
• Real-life comparison: After finishing the picture sort, research the animals and discuss their approximate sizes in nature. Keep this as a separate activity so the two sorting rules do not become confused.

More Free Sorting Activities for Kids

Continue practicing early classification and comparison skills with these related printables:

Find more activities in the complete Kids Printables collection.

Compare insect pictures with the Big and Small Bugs Sorting Worksheets.

Reinforce size words using the Big and Small Shapes Sorting Worksheets.

Add a food theme with the Big and Small Fruit Sorting Worksheets.

Practice a different attribute with these Color Sorting Worksheets.

Explore habitats and nature using the Pond Life Sorting Activity Mats.

Important: Children are sorting the printed picture sizes, not the animals by their real-life sizes. For example, the flamingo picture belongs in the large column because it is one of the largest pictures on the page—not because a flamingo is larger than a giraffe in nature.

Download the Free Zoo Animal Sorting Worksheets

Use this simple zoo animal sorting activity to practice small, medium, and large while building observation, reasoning, cutting, and counting skills. Print one copy for a cut-and-paste worksheet, or prepare a laminated set that children can use again throughout a zoo- or animal-themed unit.

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