__1__

　　2.Your social life may improve.

　　Not only does walking your dog help you to get exercise, it might also help you get a date. __2__ Going to the dog park or taking your dogs to run errands can also lead to strangers striking up conversations with you about your dog.

　　3.Your heart will be healthier.

　　Studies show that petting a dog lowers a person's heart rate. __3__ In fact, some researches show that dog owners are much more likely to survive a heart attack compared to non­dog

　　owners. Male pet owners in particular tend to experience a reduced rate of heart disease.

　　4.You're less likely to feel depressed.

　　__4__

　　Dog owners are less likely to depressed. Dog owners who have been diagnosed with clinical depression aren't likely to be as depressed as other people. Caring for a dog helps relieve symptoms of depression and encourages people to be more positive.

　　5.__5__

　　Dogs can be effective home security system. Just knowing that you've got a dog who

　　can use its keen sense of hearing to detect anyone walking around can help increase your sense of security, which is good for both your mental and physical health.

　　A．You'll feel safer.

　　B．Dogs can replace security system.

　　C．You can never imagine your dog can be of so much benefit.

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