Only ruminants have four stomachs.
Ruminants are a group of mammals that have a specialized digestive system designed for digesting tough plant matter like grass. These four stomachs work together to break down cellulose and extract nutrients from grass.
Here are some examples of ruminants:
* Cows
* Sheep
* Goats
* Deer
* Giraffes
* Antelope
* Buffalo
Other herbivores, like horses and rabbits, have different digestive systems. They may have one stomach but have other adaptations for digesting plant matter, like a longer digestive tract or a cecum (a pouch in the digestive system that helps break down cellulose).