What to Do Mix the corn syrup, grenadine, and food coloring in the jar to produce a nice, deep blood red. What Happens You've made a fairly realistic prop blood for stage or screen.
Lobsters have blue blood.
The ancient Aztecs used cochineal, a red dye prepared from the dried bodies of female Cadtylopius coccus, an insect that lives on cactus plants in Central and South America. Cochineal is still used today in food coloring, medicinal products, cosmetics, inks, and artists' pigments. The heart of a shrimp is located in its head. People who live in high altitudes have up to two quarts more blood than people who live at sea level. The common vampire bat, which does attack people and drink their blood, is only three inches long.