The transmission of data from one computer to another, or from one device to another. A communications device, therefore, is any machine that assists data transmission.
In dogs, thyroid disease is almost always hypothyroidism. Hyperthyroidism (overactive thyroid) occurs in cats but is not typically seen in dogs. Unfortunately, an overactive thyroid in a dog is usually a sign of thyroid carcinoma, a cancerous thyroid tumor.
Most affected dogs will show signs between 6 months and as late as 2 or 3 years of age. The first signs are hair loss and dry skin and possibly a recurring bacterial infection, generally on the back where small bumps will reveal infected hair follicles.