The Anatomy of the Small Intestine
The small intestine is a long, tube-like organ that is responsible for the majority of nutrient absorption in the digestive system. It is lined with tiny finger-like projections called villi, which increase the surface area for absorption. The small intestine is divided into three sections: the duodenum, the jejunum, and the ileum.

Why Do Carnivores Have Shorter Small Intestines?
Carnivores are animals that primarily eat meat, while herbivores primarily eat plants. One of the key differences between these two dietary types is the length of the small intestine. Here are some reasons why carnivores have shorter small intestines:

Faster Digestion of Meat
Meat is easier to digest than plant material, as it contains less fiber and requires less mechanical breakdown. This means that the food moves more quickly through the digestive system of a carnivore, allowing for a shorter small intestine.

Less Need for Fermentation
Herbivores often have longer intestines because they need to ferment the plant material in order to break down the tough cellulose walls of plant cells. This process takes time and requires a longer digestive tract. Carnivores do not need to ferment their food in the same way, so they can have a shorter small intestine.

More Efficient Absorption of Nutrients
The villi in the small intestine are responsible for absorbing nutrients from the food that is digested. Because meat is easier to digest than plant material, the villi in a carnivore's small intestine can be shorter and more densely packed. This allows for more efficient absorption of nutrients.

Conclusion
Carnivores have shorter small intestines than herbivores because meat is easier to digest, requires less fermentation, and allows for more efficient absorption of nutrients. This is an adaptation that has evolved over time to suit the dietary needs of these animals.

Carnivorous have shorter small intestine as compared to herbivorous because herbivorous have to digest cellulose and since the digestion of cellulose take long time as a result herbivorous have longer small intestine is compared to carnivores.