Kids. That is a juvenile goat. The correct word is children.
(Gasp! Oh, no, wait, I'm British, living in Canada. Nobody says child/children).
2.0. 3.0.
No, it's just 2, or 3. 2.1? Sure. 2.174? Ok. 2.0000000000? No. You don't need to (always, every time) say "two point oh!".