Yes, in moderation dogs can it small amounts of mulberries. This should only be as a treat and they need to be ripe.
However it is also important to note that some dogs may experience digestive issues or allergic reactions to mulberries and therefore it is important to slowly introduce this food into their diet.
If you are worried about how your dog will react to this food then it is best to avoid it altogether.
Another issue with mulberries is the sugar content. Dogs should not eat a lot of sugar as it is not good for their health.
So moderation is key when it comes to dogs eating mulberries.