How Your Thyroid Works. Controlling hormones essential to your metabolism. Your thyroid gland is a small gland, normally weighing less than one ounce, located in the front of the neck. It is made up of two halves, called lobes, that lie along the windpipe (trachea) and are joined together by a narrow band of thyroid tissue, known as the isthmus.
What is the average weight of a Border Collie? 30-40 lbs for a female (13.5-18 kg) and 40-60 lbs for a male (18-27 kg) Though there will always be exceptions to this (i.e. larger or smaller dogs), the large majority of Border Collies fall into this range. The breed as a whole is a medium-sized breed.
Life span. The natural life span of the Border Collie is between 10 and 14 years, with an average lifespan of 12 years. The median longevities of breeds of similar size are usually 12 to 13 years. Leading causes of death are cancer (23.6%), old age (17.9%) and cerebral vascular afflictions (9.4%).