Two: inside and outside.
Yes, two. Where the curved surface meets the flat ends.
yes 2 - where each circle joins the curved face, at the top and at the bottom
A cuboid has got six flat surfaces.
2
it has 500 edges
No, a cylinder don't got vertices.
Yes
If you have got enough cubes, as many as you like.
It has got 6 engine cyclinder
The people who created the breed probable liked curved ears so they bred a horse with slightly curved ears horse to another with curved ears and got a foal with really curved ears. Through selective breeding they insured that the entire breed would have curved ears.
Three - one at each end and the large face wrapped around the circumference.