These are our favorite animal stories of 2023

From birds repurposing antiavian architecture to jellyfish that can learn, here are dispatches from the animal kingdom that we went wild for in 2023.

Intelligent jellies

No brain? No problem. The fingernail-sized Caribbean box jellyfish (Tripedalia cystophora) uses its clusters of eyes and nerve cells to learn to avoid bumping into things, experiments in an aquatic obstacle course suggest (SN: 9/22/23). In the box jelly’s natural habitat, where the creature must swerve to dodge mangrove roots in murky water, it pays to be a good pupil.

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