According to current scientific thinking, the lifespan of all living creatures can be measured in the number of heartbeats: around 1 billion.

(Humans live an average of 65 to 70 years, hamsters on average 3 years and Artic whales as long as 150 years, but the number of heartbeats stays the same. This is because whales can have as few as 10 heartbeats a minute and hamsters as many as 450, so during their lifespan the number of beats averages out. So stay chill, and don’t let anyone steal your heartbeats.)