it's called a dopler
he answer is it is a stethoscope
Yes, young children can hear your heart beat clearly with their ears yet, still adults can hear it using their ear (the thing is, it's too soft). I recommend, using stethoscope.
puppies hear the beat of their mother's heart.
Every Dr is different. They normally begin looking for it around 10 weeks of pregnancy but my not be able to hear it until around 12 weeks.
yes
A Stethescope
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.
No!
Yes.
it is called tinnitus
it is called tinnitus