It was, and looking at some of the online issues, obviously still is, an excellent little magazine.
The history of the magazine is an interesting one.
It was founded in 1951 by a 17 year-old Danish post office worker, Bent Jorgensen, who wanted a way to get news from zoos, and thought that starting his own magazine would enable him to do this. He would later go on to be the director of the Copenhagen Zoo.
Its editorship was, for nearly 20 years, in the hands of a Dutch zoo enthusiast (and public relations expert), Gerald van Dam, and when he retired, in 1973, it was taken over by John Aspinall (possibly seeking to gain credibility in the zoo world). There followed a trio of relatively short-lived editors, of whom Geoffrey Schomberg was the most notable, before Nick Gould was appointed, in 1989. By that time the magazine was poor: badly edited, with no real sense of identity and little aesthetic appeal. Over the next 21 years Nick turned this around. He was a fastidious editor, who was magnificently pedantic with both content and design.
Since his retirement, in 2010, I fear the magazine has lost its mojo. With the internet offering so much, a printed publication can, to my mind, only justify its presence if it is flawless in its execution and authoritative in its content. I'm not sure that the current incarnation of the magazine is either of these things, and as a consequence I am not sure that it offers anything that cannot be found elsewhere, online. During Nick's reign, this was most certainly not the case.