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1.
How many chambers does the heart of a cow have?
2.
What vessel carries blood away from the human heart?
3.
How many hearts does an octopus have?
4.
The human heart has 4 chambers. What is the top chamber called?
5.
The average human heart is the size of a ......?
6.
What mammal has the largest heart?
7.
What mammal has the highest blood pressure?
8.
What mammal has the fastest heart rate?
9.
What animal has 4 heart?
10.
Who's heart beats faster?