I want to cover a portion of the fence on the West side of my back yard, in order to make the area there more interesting. A friend suggested Boston Ivy but I've heard so much about ivy being an extremely invasive plant and am hesitating about using it. I'd be grateful of have opinions on the advisability of planting Boston Ivy, and whether it is considered less threatening than some of the other ivies. I've also heard that Boston Ivy can be poisonous and wonder whether, should my dog decide to chew on the leaves (after he's eaten some of my tomatoes) he might suffer ill effects. If Boston Ivy is a bad idea, can anyone suggest another plant? Thanks.