Yes, dogs can eat rocket, which is also known as arugula. Rocket/arugula is a leafy green vegetable safe for dogs when given in moderation. It is low in calories and provides some fiber and nutrients beneficial for dogs' digestion and overall health. However, too much rocket can cause digestive upset such as diarrhea. It's best to introduce it slowly to your dog's diet and avoid any salad dressings or seasonings that might be harmful. Dogs prone to bladder stones should avoid rocket due to its purine content. Also, wash the leaves thoroughly and consider organic rocket to avoid pesticide residues. Cooking rocket is also safe if preferred.