Phys.org

Brainless sea sponges use sunset to prepare for metamorphosis—and attach in 30 minutes

Brainless sea sponges use sunset to prepare for metamorphosis—and attach in 30 minutesWorldPing

Well before I start collecting coats, keys or shoes, my dog always knows when we're about to leave. By picking up on subtle cues, he anticipates our next movements, reminding me he's smarter than he often shows. But anticipation isn't always about brains.

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