Dogs may die if they eat crab shells. Crab shells are very hard. If a dog bites the crab shell, there will be very sharp cuts, which may scratch the dog's mouth or stomach. If the situation is serious, it will cause the dog's death, so it is not recommended. Owners who feed their dogs crabs should not feed them small bones that are as hard as crabs.

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Dogs are not allowed to eat seafood because the salt content in seafood is relatively high and exceeds the dog’s limit. If dogs eat seafood for a long time, they may suffer from some skin diseases, and some dogs are allergic to seafood. If they eat seafood, it may pose a threat to their lives.