Blood (plasma and cells) is approximately 6% of the body weight of snakes and the normal PCV of a snake is about 0.20 to 0.30 l/l (20-30%). Blood cells form in the bone marrow and spleen, and early in life, the liver. | Blood (plasma and cells) is approximately 6% of the body weight of snakes and the normal PCV of a snake is about 0.20 to 0.30 l/l (20-30%). Blood cells form in the bone marrow and spleen, and early in life, the liver. |