Studies suggest grey squirrel, feral pig,  & rat control are barking up the wrong tree BELFAST;  GUAM;  VANCOUVER––“Invasive” grey squirrels are allegedly extirpating red squirrels in the British Isles by transmitting squirrel pox. Feral pigs allegedly run amok to the detriment of rare native plants on Guam,  a remote Pacific island. Rats present a perennial […]