The berries on the right are pokeberries. Eating them can make you sick. Poison Control gets a lot of calls about children who ate purple berries. In the spring, young poke leaves are cooked as "poke salad"; leaves must be boiled and drained twice to be eaten safely.
Considering this, what kind of berries are safe to eat?
Avoid white and yellow berries, as most of them are poisonous. Blue and black berries are usually safe to eat. The "berry rule" is that 10% of white and yellow berries are edible; 50% of red berries are edible; 90% of blue, black, or purple berries are edible, and 99% of aggregated berries are edible.
Are there strawberries that are poisonous?
Hydrogen cyanide (HCN) is a very deadly poison. As a result, strawberry leaves during this period of decay are extremely toxic and must not be consumed in any way. The fruit of wild strawberry plants is very definitely edible. In fact, many people feel that wild strawberries are actually much tastier!