No, avoid feeding your dog pistachio shells. Ingesting the shells could cause injuries to your dog’s digestive tract. Your dog risks choking from the shells since they’re difficult to chew and digest, leading to difficulty breathing. Pistachio shells can also cause dental problems when small pieces get stuck in the dog’s teeth. It can be problematic since dogs don’t brush to remove the plaques. Additionally, the shells harbor the most fat content making them a health hazard in large amounts.