How Well Do You Know Horses??

How well do you know horses?????? Can you get them right!!!! find out by trying!!!!

1 How long is a mare normally in foal for before she has her baby??
2 What is a hard bristle brush called?
3 Is Pinto a breed or a colour
4 what does grizzled mean??
5 Can a mare come in heat ( in season) if she is in foal
6 Can horse tranquilisers kill humans