Dr. Jean Dodds has done a lot of research on
thyroid problems in dogs. >From what I have read, dogs that become
aggressive as they get older can often be helped by being put on thyroid
medication. I have read a lot of testimonials on my dog lists written by people
who swear this saved their dog from being put down. Their regular vet said the
blood test showed the thyroid was normal, but when they sent it to Dr. Dodds, she said it was abnormal and the medication changed
the dog’s nasty disposition.