The muscles of the lower leg control foot motion and stability, so increase in activity or changes in footwear can sometimes cause sore muscles or tendonitis. While the increase in physical activity is a leading cause of lower leg pain, there are many other health conditions that can cause leg pain. Leg pain that is severe, sudden, or accompanied by swelling should always be evaluated by a physician. Some of the more common causes of lower leg pain include:
Zoos-Top Ten in the USA. 1. San Diego Zoo-San Diego, CA The world-famous San Diego Zoo in Balboa Park, San Diego, California is one of the largest, most progressive zoos in the world with over 4,000 animals of more than 800 species. Exhibits are often designed around a particular habitat.
The oldest zoo in the United States is the Philadelphia Zoo. It was chartered by the state in 1859, though the opening was delayed due to the Civil War. The zoo was officially opened on July 1, 1874, and since opening, it has become one of the premier breeding facilities in the world.