i found a huge swollen lymph node bigger than a softball on my blood hounds neck. it came up over night. i took him to the ER vet and they sent me to my regular vet, she thinks its a reactive lymph node reacting to a bite or other injury,, no visible injury or bite marks. the vet is going to remove the node and send it off for test. all other lymph nodes are feel normal at this time. its the node