"Adult snakes and lizards are just the tip of the iceberg," said Prof William Sutherland, of the University of Cambridge. "If ...

The scale of imports of cut flowers means it is hard to monitor and control, meaning more foreign wildlife such as the Colombian tree frog can pass through customs - J Esteban Berrio/iStockphoto ...

A Colombian tree-frog found in a bunch of roses at a Sheffield florist is a warning of the rising danger of invasive species found on imported plants, scientists have said. A growing number of ...

The unusual amphibian was discovered among a bunch of roses which had been imported from overseas, after they had arrived in the city. Dr Silviu Petrovan, a frog specialist, of the University of ...

These "hitchhiking intruders" have included a tree frog that emerged from roses at a florist's shop in Sheffield and snakes discovered in ornamental olive trees shipped across mainland Europe.

Back in 2016, one of us (Silviu Petrovan) was asked to identify a live frog found in a shipment of roses in Sheffield, ...

These "hitchhiking intruders" have included a tree frog that emerged from roses at a florist's shop in Sheffield and snakes discovered in ornamental olive trees shipped across mainland Europe.