All dogs are very good dogs. And each one is smart in a variety of unique ways. But there are some dog breeds that are just born with an inherent leg up in the intelligence department. Here are six of the world's smartest dog breeds, according to Cesar's Way.

1. German Shepherd

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There's a reason why German shepherds are regularly employed as police dogs and service dogs—and, yes, it has a lot to do with how smart they are. This fiercely loyal breed is also great with kids, making them a great family pet.

2. Labrador Retriever

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Labrador retrievers are intelligent, gentle, family-friendly dogs. They are the most popular dog breed in America, and they make excellent guide dogs and rescue dogs.

3. Border Collie

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Border collies are great working and sheep herding dogs. They're athletic and agile but, most importantly, they love cuddling.

4. Golden Retriever

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Golden retrievers are intelligent, friendly, and devoted sporting dogs. Goldens are great at hunting, and have spent years serving as seeing-eye dogs and working in search-and-rescue jobs. They're lovable and loyal, too.

5. Shetland Sheepdog

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Shetland sheepdogs are playful, intelligent, affectionate, and loyal. They love to learn new tricks and they make great watchdogs.

6. Poodle

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Poodles are very smart, proud, and active dogs—plus, they're hypoallergenic. Poodles are easily trained to track, hunt, retrieve, and obey.