The bacterium Myxococcus xanthus is a voracious predator of other microorganisms. M. xanthus can form fruiting bodies (black dots, pictured) and swarm through colonies of prey (right-hand circle) by forming ripple-like travelling waves. However, writing in PLoS Biology, Vasse et al. report that the prey bacterium Pseudomonas fluorescens can slaughter M. xanthus to extinction under certain conditions (M. Vasse et al. PLoS Biol. 22, e3002454; 2024).
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The author declares no competing interests.