The author of the book “Frog on the Wall” is Vladimir Babenko, a professional zoologist who worked for a long time at Moscow State University. M. V. Lomonosov (now teaches at Moscow State Pedagogical University). During his long-distance business trips, he had to observe a variety of animals. However, this book is not only about frogs, birds and animals. On expeditions, zoologists also meet people - foresters, rangers, game wardens, fishermen, poachers and other wanderers. Such meetings, as a rule, are associated with extraordinary personalities, interesting events, and unexpected adventures. This, so to speak, is a by-product of expeditionary work, impressions that are indirectly related to zoology. Based on them, the author wrote a book, showing the work of people of a rare specialty - field zoologists and telling what happens to them during their travels. Monographs, books, articles, theses and reports speak about the scientific work of zoologists. But how this material was mined and what remains “behind the scenes” is known to few. And this is also what the book “Frog on the Wall” is about. Some of the stories are funny, others are sad, others are dramatic. In general, as it happens on expeditions, and in everyday life too.