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The Big Team-Up: How a Giant Microbe Helps the Capybara’s Digestion

Franciane Cedrola,M. V. X. Senra,4 Authors,V. Solferini

2026 · DOI: 10.3389/frym.2026.1483371
Frontiers for Young Minds · 0 Citations

TLDR

Scientists have discovered that Muni has genes that produce powerful enzymes essential for the capybara’s digestion, and this remarkable partnership between the capybara and its microbial allies highlights how cooperation can help overcome life’s toughest challenges.

Abstract

The capybara, the world’s largest rodent, weighs up to 90 kg and measures over one meter in length. Capybaras feed on grasses, fruits, and tree bark. However, these plants are coated in tough cellulose, which is difficult to digest. To overcome this, the capybara relies on microbes in its gut that help break down the cellulose and release nutrients. One key microbe is

Muni

, a giant protozoan that can grow to be up to 3 mm long, visible to the naked eye. Scientists have discovered that

Muni

has genes that produce powerful enzymes essential for the capybara’s digestion. This remarkable partnership between the capybara and its microbial allies highlights how cooperation can help overcome life’s toughest challenges.