An officer holds a bottle of cobra tonic. In the evidence lock-up near Britain's Heathrow Airport, home to a menagerie of confiscated wildlife contraband, UK Border Force investigator Jan Sowa is pictured here picking up a tonic bottle from Asia, containing an entire snake. &quot;Most frequently we see these as tourist souvenirs, rather than serious medicinal aids,&quot; Sowa said of the snake bottle, noting its English labelling