Okay, so what is this plant? I thought it was a privet, but now it's putting out all these little white flowers and when I looked up privets, the leaves look very different. This is very clearly intentionally planted (I have 3 of them along a fence), grows fast (I've already trimmed it back once, and it looks like it's been trimmed to the ground a few times), but otherwise it seems fairly harmless. I mostly care about this because I want to know if it's going to have berries or anything that's poisonous to the dog!
Here is a picture: