Are there what might be called 'impostor' berries that look similar to tasty, edible berries but are actually poisonous? A few days ago I happened up on a berry that looked almost exactly like a blackberry, but it was growing on a small woody tree-like plant that had 3-lobed leaves and no thorns. I was tempted to eat it, but decided instead to smash it and smell it. It didn't smell appetizing. If it was in fact poisonous, it makes me wonder why the plant would go to all the trouble to make an attractive fruit that isn't nutritious to animals (like me) that might otherwise eat it and spread the seeds.