The largest reptile in the world is the saltwater crocodile, generally 13 to 18 ft. long and weighing up to 2,200 lbs. Females are smaller, usually 7 to 11 ft. and 1,000 lbs.
Possible causes of anemia include: 1  Certain medicines. 2  Destruction of red blood cells earlier than normal (which may be caused by immune system problems) 3  Long-term (chronic) diseases such as chronic kidney disease, cancer, ulcerative colitis, or rheumatoid arthritis.
Red blood cells contain hemoglobin, a protein that enables the blood to carry oxygen to every part of the body. Anemia develops when the body does not produce enough red blood cells or red cells are lost due to bleeding or other causes. In people with anemia, the blood is unable to supply enough oxygen to the body. There are many possible causes of anemia. Symptoms of anemia can include: 1  Fatigue. 2  Weakness. 3  Dizziness.