Sep 06, 2005. The thyroid dimensions are at the upper limits of normal - I do 6-8 ultrasounds a day in the office and usually the measurements of normal thyroids are 4-4.8 x 1.0-1.8 x 0.8-1.6cm which is consistent with published dimensions.ep 06, 2005. The thyroid dimensions are at the upper limits of normal - I do 6-8 ultrasounds a day in the office and usually the measurements of normal thyroids are 4-4.8 x 1.0-1.8 x 0.8-1.6cm which is consistent with published dimensions.
Probiotics, the good intestinal bacteria usually prescribed to treat diarrhea, have helped many dogs with tear staining. Look for a veterinary probiotic such as FortiFlora, Prostora or Proviable. Don't give Princess antibiotics like tylosin or tetracycline.robiotics, the good intestinal bacteria usually prescribed to treat diarrhea, have helped many dogs with tear staining. Look for a veterinary probiotic such as FortiFlora, Prostora or Proviable. Don't give Princess antibiotics like tylosin or tetracycline.
The most common cause of tear stains in dogs is excess tearing or epiphora, which makes the hair and skin around the eyes damp. This can lead to the growth of bacteria and yeast. Red yeast, which produces a reddish brown discoloration of the face, is a common cause of tear stain problems. Excess tearing is also your dog's response to irritation. Dust or other allergens can irritate your dog's eyes and cause them to water.