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: 1  Insufficient iron in the blood. 2  An inherited blood condition. 3  Lack of vitamins like B-12 and folate. 4  Another illness (like kidney disease or cancer). 5  Rapid blood loss (due to recent surgery, heavy periods, or a bleeding ulcer).