Yes, dogs can eat crab but with caution and in moderation.
Crabs are decapod crustaceans that are found in the ocean, in fresh water, and on land. They are covered with a thick exoskeleton, which is difficult for dogs to bite and chew on. On the other hand, their flesh is a soft, delicious treat that can be given to dogs when cooked without seasoning.
Crabs are an excellent source of protein and vitamin B12. However, dogs should only eat a limited portion since they are high in cholesterol and sodium. Some dogs are also allergic to iodine, which is found in crabs.
How to feed crab to your dog: Do not attempt to feed raw crab to your dog. There is a high risk of passing on bacteria (such as Vibrio cholerae and Vibrio parahaemolyticus) and parasites (such as Paragonimus westermani). Additionally, do not feed your dog imitation crab meat since it is usually packed with preservatives.
Prepare the crab by thoroughly cleaning it before steaming or boiling it. Do not fry it or cook it with butter, salt, garlic, or onion since these are highly toxic for dogs. Let it cool then separate the crab meat from the shell. Dispose the shell properly to prevent your dog from choking, getting mouth or throat injury, and having intestinal blockages. You can top the shredded crab meat over his meal or give it as a plain treat.
When feeding your dog crab for the first time, only give him a small piece and observe him for any changes. Contact your veterinarian if he manifests any of these symptoms: diarrhea, upset stomach, lethargy, watery eyes, and runny nose.
In summary: Packed with vitamin B12 and zinc that encourages healthy brain function and helps regulate metabolism, crabs may be enjoyed by dogs in moderation as long as they are not allergic to the seafood. When giving cooked crab to your dog, make sure you only give him unseasoned meat without the hard shell. Consult with your vet to guarantee you give him just the right amount.