Hypothyroidism

This occurs when the thyroid does not produce enough hormones to function properly. Metabolism slows down.

Greyhounds normally have a lower thyroid level (.5-3.6) than other breeds when given the T4 test; a basic parameter test. While this is about half the level as other dogs it does not mean thyroid disease.

Symptoms

A better diagnosis is to also look at clinical signs indicating low thyroid function. Some possible signs include:

• Dry dull coat or hair loss
• Low esteem and shyness
• Sensitivity to cold
• Sudden weight loss or gain
• Exercise intolerance
• Lethargic or mental dullness
• Fear of thunderstorms

Treatment

Treating this disease is as simple as using the prescribed thyroid supplement Soloxine; it is administered throughout the dog’s lifetime. A greyhound should receive half the dosage recommended other breeds. (.1mg per 20 lbs given every 12 hours). The drug should be monitored within 60-90 days of initially starting the medication and adjusted to find the right dosage. The level should be monitored annually. Greyhound levels at 3.0 or higher indicate that the thyroid is functioning at its best.