It’s pretty much what it says on the tin. To a biologist, the choices of species aren’t particularly surprising, though I might perhaps have included fewer animals and more bacteria and plants. Even though this is a cut-down version of the full book, it’s still pretty exhaustive (and at times a bit exhausting). It’s full of interesting titbits, but nothing at great length, and a large portion of the back is taken up by charts attempting to put things into some sort of ranking as to how much it has affected the world. The focus is very much with Lloyd’s subtitle, “100 Species That Have Changed the World”.
Easy enough to read, though perhaps one you might prefer to dip in and out of than just read straight through.