Answer:
We are few to the wise; We are abundant to the drunken; We can calm the beast and are precious to the child; We can devour the heart, without piercing the skin
We are five little objects of an everyday sort. You will find us all in a tennis court.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard.
My first keeps time, my second spends time, my whole tells time.
A great mysterious place that the bold have been known to journey into.
I am a animal that is cute but dangerous, what am I?