Answer:
There is 10 birds on a branch, a man shot 5 of them. How many were left?
What dentists battle on a daily basis
It's what light turns into in the night
When will water stop running down hill?
Other terms for this handy device include doohicky, doo-dad, and whatchyamacallit.
People take me on walks and I run and have fun. What am I?