Sussex, UK. 28th September, 2016. A common garden frog in a garden in Sussex yesterday; a study published this week in the biological research journal, Royal Society B, suggests that the introduction of infected animals from aquatic retailers into ponds, or moving species between different ponds, may be playing a role in the spread of the deadly frog disease, ranavirus, across the UK. Credit: Andrew Hasson/Alamy Live News

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Keywords: amphibian, croak, evolution, frog, reptile, ribbit