There are many breeds of dogs that may have relatively long legs. Here are some common dog breeds with long legs:

Greyhound: Greyhounds are an ancient hunting dog known for their speed and agility, usually with long legs and a slender build.

Whippet: The Whippet is also a hunting dog, similar to the Greyhound, in that they generally have longer legs and a streamlined body structure.

Doberman Pinscher: Doberman Pinscher is a large dog breed with a strong and powerful body and relatively long legs, giving people a sense of elegance and majesty.

Afghan Hound: The Afghan Hound is a beautiful long-haired dog breed with long legs, a tall body and an elegant appearance.

Dalmatian dogs: Dalmatian dogs, also known as Dalmatians, usually have longer legs and unique spotted patterns.

Saluki Hound: The Saluki Hound is an ancient hunting dog. They have long, slender legs and can run very fast.