Based on the provided information, elephants have the most blood among the listed animals. The amount of blood an animal has is generally related to its size.
Blood Volume in Different Animals
| Animal | Approximate Blood Volume |
|---|---|
| Mouse | 0.0016 liters |
| Human | 5 liters |
| Cow | 39 liters |
| Elephant | 245 liters |
Relationship Between Size and Blood Volume
The reference states that "the volume of blood in an organism is roughly proportional to its size". This explains why elephants, being the largest animal on the list, have significantly more blood than the other animals mentioned, such as humans, cows, and mice.
- Size Matters: Generally, larger animals have a greater blood volume because their bodies require more blood to circulate oxygen and nutrients.
Key Takeaways:
- The volume of blood in an animal is closely tied to its overall size.
- Elephants have a large volume of blood, estimated to be around 245 liters.
- Mice have a very small volume of blood, estimated to be just 0.0016 liters.
