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.
Anemia caused by low iron - children. Anemia is a problem in which the body does not have enough healthy red blood cells. Red blood cells bring oxygen to body tissues. Iron helps make red blood cells, so a lack of iron in the body may lead to anemia. The medical name of this problem is iron deficiency anemia. Anemia caused by a low iron level is the most common form of anemia. The body gets iron through certain foods. It also reuses iron from old red blood cells. A diet that does not have enough iron is the most common cause.