Enjoy them as tapas, in salads, on crusty bread, or tossed with pasta and olive oil for a Mediterranean-inspired meal.

Yes, the ink is edible and often used as a flavoring in Mediterranean and Asian cuisine. It adds a savory, umami depth to dishes.
Healthline — What Is Squid Ink, and Should You Eat It?

Dogs can eat plain cooked squid in small amounts, as it provides protein and beneficial nutrients such as omega-3 fatty acids and vitamins. However, canned squid often contains added oils, salt, and spices that can be harmful to dogs. Therefore, feeding canned squid intended for human consumption to dogs is generally not recommended unless specifically labeled as safe for pets. Veterinary nutritionists caution that additives in canned seafood may pose health risks, including digestive upset or pancreatitis.

MasterClass — Can Dogs Eat Squid?Dogster — Can Dogs Eat Squid?Potty Buddy — Can Dogs Eat Calamari?

Squid is tender and slightly sweet, octopus is firmer and more robust, and cuttlefish is mild and delicate. Each has a unique texture and flavor profile.

Squid, octopus, and cuttlefish contain moderate to high levels of cholesterol but are low in saturated fat, which allows them to be included in a balanced diet when eaten in moderation.
Nutritional values can vary by species and preparation, so checking specific product information is recommended.

FoodStruct — Octopus vs. Squid Nutrition ComparisonWebMD — Squid: Is It Good for You?CheckYourFood — Cuttlefish Nutrition FactsScienceDaily (2018) — Cephalopods as Important Nutrient Sources