How long do dogs live is a common question. The answer requires you to consider many factors, which include breed mix and size, and environmental influences. In general, smaller dogs live longer, from 14-22 years, with medium sized dogs living 11-14 years and large dogs living 8-12 years. Mixed breed dogs tend to live longer as many purebreds suffer from breed specific genetic problems that may shorten lifespan.
Diseases of the neurological system can also cause lethargy, and examples of these include fibromyalgia and Parkinson's disease. Diseases such as these have joint discomfort or stiffness, which may cause those affected to move less. Since they cannot move well without pain, this may increase their lethargy.
lethargy lassitude torpor torpidity stupor languor. These nouns refer to a deficiency in mental and physical alertness and activity. Lethargy is a state of sluggishness, drowsy dullness or apathy: The war roused the nation from its lethargy.Lassitude implies weariness or diminished energy such as might result from physical or mental strain: âHis anger had evaporated; he felt nothing but utter lassitudeâ (John Galsworthy). The time of lethargy at Elba seems to have been more unfavourable to his powers than the cold of Russia. 2  Simultaneously with this work in the north, Tunstall circuit, having thrown off its lethargy at the Wrine Hill camp-meeting on the 23rd of May 1819, was carrying on an aggressive evangelism.