How much blood do cats have?

How much blood do cats have? I am referring to the domestic cat as this must be how the question should be interpreted.

The body of a typical cat of around 12 pounds or 5 kilograms contains about 330 ml (millilitres) or 12 ounces of blood.

To get a feel as to what this represents, it is the same amount as in a 12 oz can of coke.

Domestic cat has 12 ounces of blood

Domestic cat has 12 ounces of blood

The cat’s brain takes about 15-20 percent of the cat’s blood. This is 2.4 ounces.

Resting muscles get about 40 percent or 4.8 ounces. During pursuits after prey the muscles use 90 percent of the cat’s blood.

Nerves and hormones control how the blood is distributed. Blood vessels dilate to increase the amount of blood which is carried to a particular region.

The cat’s arteries carry the blood from the heart and is higher in pressure to blood in the veins where it is returned to the heart.

Veins have valves to ensure that the blood moves in one direction.


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Source: Dr Bruce Fogle’s The Encyclopedia Of The Cat

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Michael is retired! He retired at age 57 and at Aug 2018 is approaching 70. He worked in many jobs. The last job he did was as a solicitor practicing general law. He loves animals and is passionate about animal welfare. He also loves photography and nature. He hates animal abuse. He has owned and managed this site since 2007. There are around 13k pages so please use the custom search facility!

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