5. Greyhound
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Greyhounds are racing dogs that, believe it or not, are very lazy. This breed is characterized by the distinct slim head, long legs and muscular body. Greyhound dogs are tender and adoring creatures that are devoted to the owner, but also love to socialize with other people and animals. Because they have a low indoor energy, they love to lay and sleep and don’t need much space. The Greyhound breed is generally healthy, but still needs a regular exercise to keep the good health and shape. Since they have smooth, short coat it is very easy to groom and keep it clean.