Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.

.jp. That's Y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific Americans' 60-second science. I'm Jason Goldman. Got a minute?

Small tasty mammals like dwarf mongooses have one main goal. Do not get eaten. So the animal,

a type of weasel, has a surveillance system. While most of the group focuses on finding food,

a handful of others watch for predators.

They take turns so that the burden is distributed equally. But in other ways, there's a definite class distinction. You have a kind of typical cooperative breeding society, which you see in

a number of different species, meerkats for example or

African wild dogs so you have a dominant breeding pair male and female pair that

will reproduce and they're the only group members then that are guaranteed to have offspring

University of Bristol biologist Julie Kern but then then within both sectors, there's a linear

dominance hierarchy. So if you are quite far down the hierarchy in your own group, then it could

take quite a long time for you to reach that breeding position, which is what you really want.

So it may be best for you to actually leave your group that you were born into and try and join another group where there are fewer same-sex individuals.

So you can effectively join a group higher up the queue than the one that you're already in.

When new immigrants show up, that means more mongooses can act as lookout against predators, right?

In reality, it's more complicated.

Kern and her team observed seven different groups of wild dwarf mongooses in South Africa.

They found that new immigrants rarely served as sentinels.

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