High blood pressure symptoms, signs and risks. High blood pressure, or hypertension, doesnât usually cause any obvious symptoms. The British Heart Foundation estimates that up to 5 million people in the UK have undiagnosed high blood pressure. Left untreated, hypertension can lead to serious diseases, including stroke, heart disease, kidney failure and eye problems.
Quick Answer. The northern ringneck snake is a bluish-black snake that grows to approximately 2 feet in length and lives throughout a sizable portion of North America. The morphology of the ringneck snake varies slightly in terms of coloration, with olive and brown varieties living in certain areas. Continue Reading.
Size: Snake size varies to extremes by species. At up to 30 feet long, the reticulated python is the longest snake. At a minuscule 4 inches, the Barbados thread snake is the smallest. Weight: The green anaconda isn't the longest snake, but it is the heaviest-they can grow up to 550 pounds! Lifespan: In captivity, some species will live as long as 50 years. Snake lifespan in the wild is more difficult to determine.