Which animal's digestive tract is described as unique in that it digests portions enzymatically in the foregut and ferments in the hindgut?

Which animal's digestive tract is described as unique in that it digests portions enzymatically in the foregut and ferments in the hindgut?

• A. Horse
• B. Cow
• C. Pig
• D. Chicken

Answer: (A)

The pattern described reflects a non-ruminant herbivore that relies on two parallel digestive strategies: enzymatic digestion in the foregut and microbial fermentation in the hindgut. In the horse, the stomach and small intestine break down nutrients with enzymes, but a large part of fiber digestion occurs later in the hindgut, specifically in the cecum and colon, where microbes ferment fibrous material. This combination—foregut enzymatic processing plus hindgut microbial fermentation—is what distinguishes the horse from animals that ferment primarily in the foregut (like cows) or have little hindgut fermentation (like chickens).

The pattern described reflects a non-ruminant herbivore that relies on two parallel digestive strategies: enzymatic digestion in the foregut and microbial fermentation in the hindgut. In the horse, the stomach and small intestine break down nutrients with enzymes, but a large part of fiber digestion occurs later in the hindgut, specifically in the cecum and colon, where microbes ferment fibrous material. This combination—foregut enzymatic processing plus hindgut microbial fermentation—is what distinguishes the horse from animals that ferment primarily in the foregut (like cows) or have little hindgut fermentation (like chickens).