Lameness is a critical welfare issue facing dairy producers. With more public opinion shifting towards better animal treatment, preventing and treating lameness will become even more important in the coming years. A study was carried out to predict when cows become lame, and what are the impacts of the variables causing lameness. Lameness was found to have negative effects on milk production and reproduction. Also it was found that if a cow is milked less when it is lame it can recover quicker and have better milk output.