Garden ponds 'playing role' in frog disease spread — Garden ponds are playing a role in the spread of deadly frog diseases across the UK, a study suggests. Ranaviruses can infect amphibians, reptiles and fish. In the UK, they have devastated common frog populations. This research suggests that the introduction of infected animals from aquatic retailers into ponds or moving species between different ponds may be exacerbating the problem.