Spaying or castrating dogs helps keep overpopulation down. This involves ear tagging, docking, mulesing, and castrating. In modern times, the Czech Republic practices surgically castrating convicted sex offenders. The rediae reproduce asexually, castrating the snail as they feed on its reproductive tissue. They were notorious for forcibly castrating travelers whom they encountered and guests who visited them. Grendel's mother is represented in the film as a castrating, monstrous female who threatens masculinity. Muhammad forbade people from castrating animals (without a reason). Bender is portrayed castrating a mobster for having relations with another mobster's wife. Carlo, realizing the atonement of his brother's actions, forgives Riccardo for castrating him. In male horses, castrating is referred to as "gelding". No fodder was provided, and even castrating and branding were often neglected. In punishment, Periander captured 300 young men of Korkyra with the intention of castrating them. When Agdistis awoke and stood, Agdistis ripped his penis off, castrating himself. In the not-so-distant past, scientists had experimented with castrating gay men.