Thyroid Dysfunction

By Dr. Dodds DVM

Thyroid Dysfunction is the most frequently recognized endocrine disorder of pets and it’s often difficult to make a definitive diagnosis, since many clinical signs mimic those resulting from other causes.

 

Dogs

Hypothyroidism is the most common endocrine disorder of canines. Nearly 90 percent of canine cases result from autoimmune thyroiditis. The heritable nature of this disorder poses significant genetic implications for breeding stock.
Common symptoms to look for in dogs:

  • Scratching  •  Hair loss  •  Seizures  •  Chronic bowel issues • Seizures in adulthood  •  Chewing feet and skin  •  Skin and ear infections  • Behavioral changes: aggression, moodiness, phobias

Cats
Hyperthyroidism in readily induced, especially in geriatric cats, by feeding commercial pet foods, treats and snacks containing excessive amounts of iodine. This finding has led to a major change in the iodine formulations of feline commercial pet foods.

Common symptoms to look for in cats:
Pacing  •  Anxiety  •  Phobias   •  Howling  •  House soiling  • Insatiable hunger  •  Dementia with aging  •  Hunger and weight loss

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