Galiulin Danila M. RussiaPermPerm State University, 15 Bukireva St., Perm 614990, Russiagaliulindm@gmail.com Author's articles Comparative thermobiological characteristics of the dice snake Natrix tessellata (Laurenti, 1768) (Colubridae, Reptilia) from the Kama Cis-Urals, Middle and Lower Volga regions