Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

Why do cows chew cud and belch, unlike my dog or cat?

Updated on September 23, 2025

What is rumination and eructation? What are their function in bovine digestion?

1 Answer

Most Helpful Answer

Jenna Beyer, DVM, MBA, cVMA

Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on October 7, 2017

A bovid's stomach is quite different from the simple stomach of dogs and cats (and humans). There are 4 compartments, and each have their own purpose. Rumination is also called "chewing the cud". This is where larger particles from the rumen are brought back up to be further decreased in size. Eructation is the way of removing excess gas (aka belching).

Here is some good information on how the rumen works:
http://www.vivo.colostate.edu/hbooks/pathphys/digestion/herbivores/rumination.html

http://www.vivo.colostate.edu/hbooks/pathphys/digestion/herbivores/rumen_anat.html
Vote Icon1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Share

Styled arrow button