An article concerned with tail’s morphological anomaly thatwas founded between L. agilis from different regions of Hungary. No anomalies in Z. vivipara sampled were found.Статья посвящена морфологической аномалии хвоста, обнаруженной среди выборок L. agilis из разных регионов Венгрии. Ни одной аномалии среди выборок Z. vivipara не отмечено.This study was supported by the Hungarian National Research Fund (OTKA-NKTH CNK 80140). We thank Zsuzsanna Horvàth, Timea Mechura, Monika Szalai, Sandor Kethelyi-Nagy, Andras Mate, Mihaly Toth, Balazs Velekei for their participation in the fieldwork, Simon Izing and Sandor Tacsi for X-raying and explaining the veterinary background of the phenomenon discussed above