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.
Common causes of anemia include the following: 1  Anemia from active bleeding: Loss of blood through heavy menstrual bleeding or wounds can cause anemia. 2  Iron deficiency anemia: The bone marrow needs iron to make red blood cells. 3  Anemia of chronic disease: Any long-term medical condition can lead to anemia.