Author(s): Dorothy Hinshaw Patent,Dan Hartman,Cassie Hartman
Format: Hardback
No. of Pages: 39
Publisher: Walker & Company
Language: English
Date Published: 2008-05-01
Dimensions: 166.9 x 231.9 x 28.2mm
Publication City/Country: New York, United States
Edition:
Illustrations: Illustrations, color; Illustrations, black and white

Yellowstone National Park's majestic geologic wonders and remarkable wildlife draw millions of visitors each year. But there was a time when these natural treasures were in great danger, all because after years of unrestricted hunting, one key piece of the puzzle had been eliminated-the wolf.
Now, more than a decade after scientists realized the wolves' essential role and returned them to Yellowstone, the park's natural balance is gradually being restored. The informative dual-level text and spectacular full-color photographs show the wolves in the natural habitat that was almost lost without them. Readers of all ages will be inspired by the delicate natural system that is Yellowstone.