A study dog sniffing a person's breath and sweat sample. (IMAGE)

PLOS

A study dog sniffing a person's breath and sweat sample.

Caption

A study dog sniffing a person's breath and sweat sample.

Credit

Kerry Campbell, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

Usage Restrictions

Credit must be given to the creator.

License

CC BY

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