________

　　Many people living alone worry about thieves，and a dog can help give owners a sense of security.Thieves are less likely to break into a house with a barking dog，and your dog can help you feel less lonely whether you're just spending the night by yourself or living alone long－term.If your dog is older and struggles to move aroundu do.

　　4．________

　　People who have regular positive interactions with others tend to live longer and be happier，and pets provide you with a valuable opportunity to meet and interact with other people.Even if you're shy，it's easy to strike up a conversation with another person if you're both talking about your animals.Visits to the dog park and meet－ups with other pet owners also provide pet owners with opportunities for interactions.If you're still anxious about meeting new peoplening a message board or online group for people with similar pets to yours.You'll quickly find yourself making new friends in addition to learning a lot about your best friend—your pet!

　　5．________

　　In a fast－paced－stress worldiety are at an all－time high.But pet owners have fewer mental illnessesse you get from spending time with your pet may even reduce the effects of depression.Dog owners are also less stressed than people who don't own dogs，and reduced stress is strongly related with lower blood pressure，a longer life span，greater happiness and improved health.

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