MoodyMule said:

 I ride my mule and she's turning 3 this year. She's been ridden for about a year now. I'm training her to be an eventer. But you have to start them young for them to turn good.

------ End Quote ------

sounds about right

It depends on the breed and temperament of the horse, and what you were planning on doing with him/her.

At my yard the rule is:

Handling from birth

Tack and lungeing from two

Backing at three

I hope this helps you :)

I was first ridden at 3yrs4months and seemed to cope well (I think!) :) xxxxxxx