"...Butler has written a book which... is a fine piece of workmanship and will be read by all even remotely interested in zoogeomorphology. It should be an informed stimulant for years to come." Stanley W, Trimble, Earth Surface Processes in Landforms
"I thoroughly enjoyed reading this book, as the author is not only knowledgable in geomorphology, but is also witty and delightfully humourous in his writing....At present, there is no other book on zoogeomorphology. This, coupled with its atractively low price and its undeniable charm, make it a first choice both for geomorphologists and for anyone interested in animals and their ecology." Francisco L. Perez, Geomorphology
"...an educating and entertaining treatise...Ecologists interested in ecosystem engineering by species will find Zoogeomorphology a very valuable source of information...." Clive G. Jones, Ecology
"...a handy reference for the general phenomena associated with zoogeomorphology....Perhaps its most valuable role will be to stimulate both biologists and geomorphologists to further investigate what are likely to be interesting and important influences of animals on the Earth's surface and near surface environment." O.J. Reichman, Quarterly Review of Biology