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.
The most common causes of anemia are: loss of blood through surgery, accidents and other causes. conditions such as chronic kidney disease, liver disease, cancer, HIV/AIDS. not enough iron, vitamin B12 or folic acid. a poor diet. diseases that destroy red blood cells, such as sickle cell anemia.