A column reader requested that I explain how one gets sperm cells from the testicle of a 3,000-pound bull into a 1 milliliter straw of frozen semen for use in artificial insemination. The answer: ...

They promise the bulls a quiet, tranquil, caring atmosphere where every need is met and there is no pressure to perform. But really, all they are after is their sperm. The business of extracting semen ...

Two tanks of bull semen have been stolen from a Northern Ireland farm, triggering a police hunt for the missing sperm and the culprits. The pair of cryogenic storage tanks containing a "large quantity ...

Ireland police said they're investigating a heist you don't hear about every day: stolen bull sperm. Police Mid Ulster said two artificial tanks of the cattle semen were stolen from the Ballyness Road ...

German police have requested help from the public in solving the baffling case of a bull sperm heist in the town of Olfen, the Associated Press reports. According to authorities in western Germany, ...