The length of a lifetime is estimated at 1 billion heartbeats for all living creatures. That is why, the smaller the animal, the faster it's heart beats, so a mouse will live for 2 years, and a human for 70 years.
I've always thought it was because the size of their bodies are different, so it would be a different lifeline because the digestive process would be different and things like that.
Answers & Comments
Verified answer
The length of a lifetime is estimated at 1 billion heartbeats for all living creatures. That is why, the smaller the animal, the faster it's heart beats, so a mouse will live for 2 years, and a human for 70 years.
I've always thought it was because the size of their bodies are different, so it would be a different lifeline because the digestive process would be different and things like that.
some long scientific explanation
Different animals have different aging speeds.
For me it's kind of self-explanitory. Idk about you.
sdfkjadskfjdsfdflkmaeskltfm
cuz god made them that way