A Stethescope
The Stethoscope is used by Doctors to hear heart beat sound of the patient.
it's called a dopler
Entrainment Theory
puppies hear the beat of their mother's heart.
yes
Actually , the heart beat is heard when the heart valves closes ! The sounds are described as "lupp-dupp"
Take a stethoscope and place it on your heart.
Yes.
No!
it is called tinnitus
it is called tinnitus
Place a stethoscope on your chest where you can feel the heart beat and you will hear it.