Why is my older dog losing hair? Is it a thyroid issue or other cause?

Hello and thank you for reaching out to us concerning your pets hair loss. Yes, hypothyroidism can be a cause of an older dogs hair loss. The clinical signs of hypothyroidism are no itchy hair loss, panting, constantly seeking out vents or shady places because the heat bothers them, etc. but this condition usually begins between the ages of two and five but there are some situations in which happens at an older age.

There are many other diseases that can also cause hair loss so it is in your best interest To take him to a veterinarian to have a full physical examination performed. The vet will be able to run tests such as blood work up, thyroid testing, skin scraping, etc. to be able to make a diagnosis and put him on the correct treatment.

I hope this information has helped. Have a great day.