"It's pretty amazing how much this charming picture book manages to convey in just over 40 pages. The vintage-looking watercolor and colored-pencil maps and illustrations are delightful, and the text begs to be read aloud. A truly lovely addition to the Yellowstone wolves canon." -- Booklist (starred review) "A history of wolves in Yellowstone that offers a salutary lesson in how ecosystem management is no walk in the park. In both cumulative rhyme and a substantial prose afterword, Parry tracks what happened when the wolves of the area that became Yellowstone National Park were exterminated. An illuminating account of a spectacular eco-success story." -- Kirkus Reviews "Working in prose, rhyming verse, panel-style art, and sweeping spreads, Parry and Thermes tell the absorbing story of what happened when wolf packs were reintroduced into Yellowstone Park. This rare work about successful environmental regeneration reveals how the reintroduction of a predator can rebalance a habitat.

" -- Publishers Weekly "The story follows the effort to first rid the park of wolves. to the realization that they in fact were important to the delicate balance. The text [is] complemented by exceptionally appealing pen and ink illustrations. Parry makes the complicated subject of a trophic cascade accessible to young readers. A worthy purchase for the animal lovers in the library." -- School Library Journal "A wonderful book for little ecologists." -- Washington Post.