The best approach for you depends on your age, physical condition, the underlying cause of the hyperthyroidism, personal preference and the severity of your disorder: 1  Radioactive iodine. 2  Anti-thyroid medications. 3  Beta blockers.  Surgery (thyroidectomy). If you're pregnant or otherwise can't tolerate anti-thyroid drugs and don't want to or can't have radioactive iodine therapy, you may be a candidate for thyroid surgery, although this is an option in only a few cases. In a thyroidectomy, your doctor removes most of your thyroid gland.
Fox squirrels have been known to live to 18 years old in captivity. Under natural conditions the average lifespan is 8 to 18 years old, though most squirrels die before they reach adulthood. Fox squirrels spend most of their time in trees during the day.
There are over 200 kinds of squirrels,7 and life span can vary dramatically between the different species.1 To find out how long the squirrels in your region can live, explore the interactive map below or click on the links beneath the map.