For an adult human being, approximately 8 pints will suffice (give or take, depending on body size, gender, and other factors),
Fleas need fresh blood to have necessary fuel for their eggs so they live on cats and dog's fur to suck blood
Not at all. You can inject as much blood as you feel necessary, however, spotting may occur.
This artery supplies blood to the brain so it is very necessary
As much as it needs.
It is your body's way of telling you that you need to eat to raise the glucose level in the blood. Glucose is necessary for your cells and you to live.
Blood is always useful. You cannot live without it. Blood is useful in the emergency room when somone loses too much of their own blood.
Well, if you are a full grown adult you have about 10 Liters if blood in your body, but you can live with about half of that
Vitamin K is the essential vitamin necessary for blood clotting.
Nobody can say because you need to know what toxin and how much is in the dogs blood
Because the blood is specific for each person; it is necessary for identification. Blood carries DNA in the white cells.
The cells in your body need oxygen to live. The oxygen you breathe into your lungs gets put into your blood. Your heart then pumps the blood carrying the oxygen to all the cells in your body.
A transfusion is usually needed when a person loses about 15-30 of their blood volume, which is roughly 750-1500 milliliters of blood.