Hi, I am a new horse owner. I bought my 14 year old miniature horse in October. She is a little hefty and the former owners visited 2 days ago and they think she has gained since I have had her. They suggested I stop all grain. I live in Maine so for the past week or so she has had to start eating hay as the grass is all gone. I was walking alot with her but now it is so dang cold and windy, that she is not getting as much exercise. She has a little barn and pasture and is free to go in and out as she wants. I have read on here that they need their hay in order to be warm, but should I limit her hay also? I love her so much and will do what is best for her. Thanks.