A bnormalities in amphibians have generated interest in the scientific community among those who seek to determine whether the causes are anthropogenic or not. Abnormalities fall into two main categories: malformations that consist of permanent structural defects resulting from abnormal development, and deformities that are disturbances of a properly formed structure (Meteyer 2000). Some factors that have been recognized and questioned as causing these abnormalities are infestation by parasites, environmental contaminants, selective predation, inbreeding, and high levels of ultraviolet radiation (Aguillón-Gutiérrez 2018). Even though some etiological agents are common, few studies have been published on these abnormalities in Mexico (Venerozo-Tlazalo et al. 2022).