Sonia Mitchell has written a review of the original Last Chance To See book, over at PopMatters.com, and I thought it was worth a link if you're still on the fence about reading this terrific book. She gives it an 8/10.

Adams treads a delicate line between making it clear how threatened some of these animals are and staying optimistic as to the future. It’s possibly too late for some of them, but others still hang on, and with increased public awareness perhaps comes an increased chance of survival. Adams’ character portraits of the conservationists in the field are witty and skillful, and leave the reader with some hope that with (often charmingly insane) people like these devoting their lives to these animals there might be a future for some of them.