Yes, dogs can eat potatoes, but there are some items to consider before feeding.
You must do discard the bad potatoes have greenish skins or rotted portion, because these potatoes contain large amounts of toxins called solanine can cause poisoning, is bad for human anatomy. They are poisonous for dogs too, can cause vomiting, diarrhea and even shock.
Potatoes should be peeled and cut eyes and green portions out, because these portions also contain large amounts of solanine, they’re bad for dog’s health.
You should cook potatoes before feeding as potatoes essentially contain trace amounts of solanine which is bad for dog, high temperatures can destroy it. On the other hand, potatoes are rich in starch which can be gelatinized by cooking, cooking make potatoes much easier to digest. In fact, many commercial dog food contain cooked potato. Cooked potatoes are safe for dogs. My dog likes mashed potatoes, fries and potato chips very much.
My vet told me that rice and potatoes are the best food for dogs have some gastrointestinal problems like indigestion and diarrhea. Of course, if you feed in moderation, they are good for healthy dogs too.
In conclusion, dogs can eat potatoes as long as it’s handled properly and cooked thoroughly.