Yes. They have a four chambered stomach just like a cow does.
Cows, and any animals that chew cud (ruminants), have a four chambered stomach. Horses do not chew cud and only have a one-chambered stomach. (pseudo-ruminant monogastrics.)
Horses do not have a multiple-chambered stomach. They just have a single stomach like a human or a dog has, not multi-chambered like a cow or sheep has.
Three
Llamas, Alpacas, and Camels.
A cow...but it's not actually multi-chambered they have 4 separate stomachs.
No, deer do not chew cud. Cud chewing is a digestive process seen in ruminant animals such as cows, sheep, and goats, where they regurgitate and re-chew their food to aid in digestion. Deer are not classified as ruminants; they are considered "pseudoruminants" because they have a three-chambered stomach instead of the four-chambered stomach seen in true ruminants.
The palomino horse a monogastric digestive system, (it has a single stomach with a single stomach chamber, as opposed to a ruminant digestive system, which has a four-chambered stomach. )
Camel or llama
The goat has one very large stomach with four parts; the rumen, the reticulum, the omasum, and the abomasum.
Deer have a four-chambered stomach.
Yes, horses have a single-chambered stomach, unlike ruminants such as cows with multi-chambered stomachs. The horse's stomach consists of a non-glandular region (foregut) and a glandular region (hindgut) that aid in the digestion of plant material.