Picture a mouse taking rapid, staccato sniffs of a crumb it's found while foraging for food. Now compare that with a human leaning in for a single, deep inhale to gauge whether a cantaloupe is ripe. New research from Northwestern University has found that, like humans, mice also can take a single sniff to deliberately probe their environment—something scientists previously did not know.
The smell of all mammals is based on a similar underlying system, although each species gives its own nuance. Understanding its basic functioning could help detect some neurological diseases earlier. The entry Mammals use the same underlying system to process odors was first published in Digital Process.