Brewers and distillers grains have been used as animal feeds for centuries. Brewers grain is a co-product of brewing beer. Distillers grains are a co-product of ethanol production. The commercial feed industry routinely uses dried forms of these co-products in manufacturing grain mixes. Wet brewers (WBG) and wet distillers (WDG) grains may also be available and used as feeds on farms. Nutrient composition of WBG and WDG vary depending on the processing plant and the grain sources (barley, rice, corn, wheat) used. Using WBG and WDG as animal feed recycles feed nutrients and reduces the environmental impact of disposal in landfills, incineration, and composting. Using these feeds on the farm can also help in controlling purchased feed costs and improving profitability.