We have a large wild plot next to us - mares tail ,bindweed ,brambles ,nettles ,ivy ,6 'high grass ,sycamores . I have learnt to live with it and enjoy the peace and quiet .I cut the ivy and pull out the weeds along my boundary .Though I do curse the sycamores . There are foxes and they do sometimes bring their food findings into my garden to eat which is not pleasant . But I tell myself that maybe they deter rats . There are a number of cats around ( we have 2 ourselves ) and they are ,and have been for many years ,fine .No fox attacks .And squirrels all seem to thrive . Hope this reassures you a bit ,try not to worry .