Mammals are warm-blooded animals with unique features that set them apart. They give birth to babies most of them, feed young ones with milk, and usually have hair or fur on their body.

Key Points

• Warm-blooded.
• Have hair/fur on the body.
• Females produce milk for young ones.
• Most give live birth (exception: platypus, echidna lay eggs).
• Examples: Humans, tigers, elephants, dolphins.