Cat love

Did you know:

1. The heart of a blue whale is as big as a car.

2. Frogs and lizards have three chambers whereas birds and mammals have four.

3. The human heart beats roughly 35 million times a year.

4. Octopuses have three hearts.

5. Dogs have a larger heart to body mass ratio than all other mammals.

6. Scientists have re-created the heart of a rat and it even started beating!

7. Pythons grow bigger hearts at mealtimes.

8. A blue whale's heart beats six times a minute (next to a human's 70 times)

9. A manatee's heart rate slows down by half during a long dive.

10. A giraffe depends on it's powerful heart that weighs up to 12kg so that it can fight the force of gravity up that long neck to the head.