Following the lead of the successful transition from country to town of large numbers of foxes, hordes of other animals have begun taking up residence in urban gardens, river banks, parks and graveyards, Mammals Trust UK said. "These exciting results suggest that our built environment and its surroundings may now be of key importance to the survival of mammalian wildlife," the trust's chief executive Valerie Keeble said.
The annual survey found that three quarters of monitored sites in towns and cities across Britain were found to contain at least one species of endangered mammal, and some were home to as many as five species.
These included red squirrels, water voles, brown hares, otters, hazel dormice and bats.
The trust said the survey results were more or less uniform across the country, although London was found to have the fewest number of species.