because they move really fast and their blood needs to pump faster so they can survive. this is why they have shorter life spans than larger animals. (also larger animals have ALOT less predators)
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What is too fast a pulse for a 74 year old woman?
pulse indicates how fast the heart is beating
it refers to how fast your heart is beating
You pulse basiclly measures your heartbeat. If you heart is beating fast, your pulse is fast. If your heart is beating slow, your pulse is slow. If your heart isn't beating at all, there's no pulse. That's why doctors often check a patients pulse
The rhythm of the pulse is checked by feeling the radial pulse, to see if the beats are coming at regular intervals or irregular intervals, if there is a pause or dropped beats in between the pule and if it is normal rate, slow or fast. More detailed information will be done by ECG / EKG and for irregular pulse you may need study of 24 hour tape of the heart.