Longan is safe to for dogs
Longan is safe for dogs but should be fed in small amounts and only when it is fully ripe. Longan is very high in vitamin C but it does contain sugar which should be limited in dogs. It is important to peel the longan first and make sure to remove the seed. Like lychee, longan seeds contain saponin which is toxic to dogs and can cause vomiting, diarrhea, and abdominal pain.