Breast cancer in the population of cats in Rostov region Maia Vakulenko, Nikolay Karnaukhov, Vyacheslav Suhomlinov, Natalia Dobaeva, Natalia Akinina, Anastasia Kochetkova and Alexey Ermakov E3S Web Conf., 135 (2019) 01075 Published online: 04 December 2019 DOI: 10.1051/e3sconf/201913501075