Pet food is animal feed intended for consumption by pets. Typically sold in pet stores and supermarkets, it is usually specific to the type of animal, such as dog food or cat food. Most meat used for animals is a byproduct of the human food industry, and is not regarded as "human grade".
A supermarket's pet food aisle in Brooklyn, New York
Cat food in a bowl.
Bushtits eating suet from a bird feeder
Cat with a bowl of pelleted cat food.
Animal feed is food given to domestic animals, especially livestock, in the course of animal husbandry. There are two basic types: fodder and forage. Used alone, the word feed more often refers to fodder. Animal feed is an important input to animal agriculture, and is frequently the main cost of the raising or keeping of animals. Farms typically try to reduce cost for this food, by growing their own, grazing animals, or supplementing expensive feeds with substitutes, such as food waste like spent grain from beer brewing.
A feedlot in Texas, USA, where cattle are "finished" (fattened on grains) prior to slaughter.
Equine nutritionists recommend that 50% or more of a horse's diet by weight should be forages, such as hay
A pelleted ration designed for horses
Cattle eating a total mixed ration