The spheres are merely there to show (to yourself and your visitors) that your dragons are higher than level ten. The shrines will show that your dragons are able to level past ten (or fifteen if it's gold), but the orbs show for each particular dragon that is above level 10.
Hemoglobin is what actually gives your red blood cells the ability to carry oxygen. A high hematocrit simply means that you have a higher concentration of hemoglobin in the blood. First of all, it could indicate dehydration, or normal amount of hemoglobin, but too little blood (plasma) volume. If this is the case, depending on how high the hematocrit is, rehydration might be needed.
Hematocrit or Hct: Hematocrit refers to the ratio of the volume of red blood cells to the volume of the total blood. The hematocrit normal range varies between the genders and is about 37 percent to 48 percent in women, and 45 percent to 52 percent for men. The hematocrit values are usually determined by spinning down a blood sample in a test tube, which results in the accumulation of red blood cells at the bottom of the test tube.