Recently my bulldog had swelling in his neck. The swelling almost feels like large golf balls in his troat. He is eating and drinking fine, but these golf balls seem to me to be in the lymph node area. They are just below the cheek bone and in between his cheek bone. Three different glands seem to be swollen. The only time they seem to be really big is at night. They seem to go down a bit in the day, but pop back up again at night. Does anyone know what could cause this or what it could be?