Mammals in Wisconsin Children’s book with beautiful full page high gloss pictures and short narratives of common mammals (weasels, fox, deer, bear, etc.) in Wisconsin. Published around 1959-1961. A quote from the book is “When a weasel sets out to go hunting he always asks himself will I eat today or be eaten”? I don’t recall the title, but the book was most likely purchased from a Milwaukee, Wisconsin book store.
Might be this one- Mammals of Wisconsin Hardcover – January 15, 1961
by Hartley H.T. Jackson http://uwpress.wisc.edu/books/0474.htm