1. The problem asks for an approximate number of blood cells in a typical adult lion's body. 2. Blood cells primarily include red blood cells (RBCs), white blood cells (WBCs), and platelets, but RBCs are the most numerous and usually the focus for such estimates. 3. The average concentration of red blood cells in mammalian blood is about $5 \times 10^{12}$ cells per liter. 4. An adult lion weighs roughly 150 to 250 kilograms, and the blood volume is approximately 7% of body weight. 5. Calculate blood volume: For a 200 kg lion, blood volume $= 0.07 \times 200 = 14$ liters. 6. Total red blood cells $= 14 \text{ liters} \times 5 \times 10^{12} \text{ cells/liter} = 7 \times 10^{13}$ cells. 7. Therefore, a typical adult lion has approximately $7 \times 10^{13}$ red blood cells in its body. 8. This is an estimate and actual numbers can vary based on health, age, and individual differences.