This document discusses fetal mummification and maceration in animals. Fetal mummification is the shriveling of the fetus caused by the absorption of fluids from the fetus and uterus, leading to the death of the fetus. It can be caused by genetic abnormalities, hormonal issues, or problems with the placenta or umbilical cord. Maceration occurs when the fetus dies but is not aborted, causing it to become putrefied inside the uterus. Both conditions require veterinary intervention such as medications to induce abortion or surgical removal of the remains if abortion does not occur naturally.