• Enlarge many of the over 450 images to full screen; print or save to clipboard.
• Access over 90 interactive questions, with explanations, and automatic quizzes.
• Link to American Concise Encyclopedia with over 15,000 entries.
• Play feature presentation of over 45 minutes of self-running multi-media content.
• Browse indexes to locate information by subject and other relevant categories.
• Access Merriam-Webster Dictionary with over 70,000 definitions.
• Did you know that mammals can range in size from just a few ounces to more than 200 tons?  Learn the two subclasses of the class Mammalia and the characteristics common to all members of it.
• Discover which mammal is the only one capable of flying. 
• This informative title introduces koalas, monkeys, orangutans, armadillos, rabbits, prairie dogs, beavers, mice, dolphins, blue whales, and much more.

 
  Mammals - Echidna through Whales Requirements for PC use

• 486DX/25 
• Microsoft windows 95/95/Me/NT4.0/2000
• 16MB RAM
• -rom drive(double speed or greater recommended)
• SVGA 640x480, 256 colors
• Sound Card recommended

Macintosh Mammals - Echidna through Whales Requirements for PC use

• 33 MHz 68030+ Macintosh
• System 7.0 or higher
• -rom drive(double speed or greater recommended)
• 8 MB RAM  (6MB free RAM required)
•  640x480 color monitor (256 color recommended)
• Sound Card recommended