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How do dogs smell time?

When you leave for work, does your dog know how long you’re away or predict when you’re coming back? Like people, our furry friends use light cues to tell time, but they have another trick: smell.

NPR’s global health correspondent Michaeleen Doucleff reports.

This article was originally published on WBUR.org.

Copyright 2023 NPR. To see more, visit https://www.npr.org.