See sample pages from this book at Wink.
If you are a serious (and I mean serious) fan of the frog, you are in for a real treat. The Book of Frogs is a meticulous field guide to 600 diverse species of frogs, including wonderfully striking, life-size photographs for each and every entry. From poisonous frogs to tiny toenail-sized frogs, whistlers, "explosive breeders," endangered frogs, and recently discovered frogs, author and one of the world's leading frog experts Tim Halliday covers an exhaustive gamut of frog species from around the planet. Although a wonderful source for anyone trying to decipher and learn about frogs they find in nature, it's a hefty, weighty tome of a book and would probably do better on a coffee table than inside a backpack.
The Book of Frogs: A Life-Size Guide to Six Hundred Species from Around the World
by Tim Halliday
University of Chicago Press
2016, 656 pages, 7.1 x 10.5 x 1.8 inches