Contrary to appearances, there is a mathematical formula. However, not only were the calculations discussed in the Saturday broadcast of the Healthy Hamster Clinic. We have learned the details of the July action of the Kraków Natural Museum Institute of Systematics and Evolution of Animals of the Polish Academy of Sciences, as well as presented the subtlety and unusualness of "Teresek" - as it is called in the museum of crocinopody. Why "Teresek"? This question was answered by the master of environmental biology Karolina Bielecka, whom Grzegorz Bernasik, along with Dr Wojciech Kujawski, discussed. Listen.