easy
A dolphin is a mammal.
What does Mammal mean?
A mammal is a warm-blooded animal whose females produce milk for their young and whose body has hair at some stage of life.
Dictionary definition
A warm-blooded vertebrate whose females produce milk for their young and whose body has hair at some stage of life; humans, whales, bats, and dogs are mammals.
Example sentences
Mammal in a sentence
medium
A whale is a mammal even though it has very little visible hair.
hard
The science text explained how mammals feed milk to their young.
Writing practice
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Quick practice
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Practice the meaning of Mammal
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does mammal mean?
Mammals are warm-blooded vertebrates whose females produce milk, and they have hair at some life stage.
Practice 2
Which clue proves that an animal belongs to the mammal group?
Milk production by mammary glands is the defining feature behind the name mammal.
Practice 3
Which sentence is accurate?
Bats have mammalian features, including hair and milk production; flight does not make an animal a bird.
Practice complete
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Mammal
Voice settings
Sounds like
mam · uhl · strongest beat: mam
Tap each sound part, then blend the whole word together.
Learn
WordMammal.
Partnoun.
MeaningMammal means A mammal is a warm-blooded animal whose females produce milk for their young and whose body has hair at some stage of life.
ExampleExample: A dolphin is a mammal.
Word breakdown
2 syllables. Say each part, then blend the word.
- Syllables
- mam · uhl
- Strongest beat
- mam
- Ending
- uhl
- Tip
- Put a little extra energy on mam.
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Synonym review
Does Mammal have synonyms?
Mammal is the precise name for class Mammalia. Descriptions such as warm-blooded animal are too broad because birds are warm-blooded too.
Antonym review
Does Mammal have an opposite?
Mammal has no direct antonym. Bird, reptile, fish, amphibian, and insect name other animal groups rather than opposites.
Word family
Mammal word family
Related words
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Student support
Understand Mammal
Hint for students
Look for the group features shared across very different animals: females produce milk, and the body has hair at some life stage.
Common mix-up
Not every mammal has thick fur or gives birth to live young. Whales have sparse hair, and monotremes such as the platypus lay eggs.
Try it in class or at home
Students classify animal cards as mammal or not mammal. For each choice, they must cite a defining feature rather than habitat, size, or ability to fly.
Teacher prompt
Why are a bat, whale, dog, and human all mammals even though they move and live in very different ways? Use milk and hair in your explanation.
Animal Classification Wheel
Compare animals with the Classification Vocabulary Wheel
Spin this researched animal vocabulary wheel to compare body groups, backbones, diets, predator-prey roles, and the evidence behind each classification.
Learning activities
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