Dogs are one of the most common pets in the world.
狗是世界上最常见的宠物之一。
They have lived with humans for thousands of years.
它们已经和人类一起生活了几千年。
Dogs are very loyal to their owners.
狗对主人非常忠诚。
They love to play and spend time with people.
它们喜欢玩耍，也喜欢陪伴人类。
Dogs can help guard the house.
狗可以帮助看家。
If a stranger comes, they will bark to warn their owner.
如果有陌生人靠近，它们会叫来提醒主人。
Some dogs are trained to help people.
有些狗经过训练，可以帮助人类。
Police dogs help catch criminals and find lost people.
警犬可以帮助抓捕罪犯，也能寻找走失的人。
Guide dogs help blind people walk safely.
导盲犬可以帮助盲人安全行走。
Rescue dogs help find people trapped in disasters.
救援犬可以帮助寻找被困在灾难中的人。
Dogs have a great sense of smell.
狗的嗅觉非常灵敏。
They can find things just by sniffing.
它们可以通过嗅觉找到物品。
Some dogs even help doctors detect illnesses.
有些狗甚至能帮助医生发现疾病。
Dogs come in many shapes and sizes.
狗的品种很多，体型也各不相同。
Some dogs are small and friendly, like poodles.
有些狗很小而且友好，比如贵宾犬。
Some dogs are big and strong, like German shepherds.
有些狗又大又强壮，比如德国牧羊犬。
Dogs need love, food, and exercise to stay healthy.
狗需要关爱、食物和运动才能保持健康。
If you take care of a dog, it will love you forever.
如果你好好照顾一只狗，它会永远爱你。
That’s why people say, “A dog is a man’s best friend.”
这就是为什么人们说“狗是人类最好的朋友”。
Now you know why dogs are such great companions!
现在你知道为什么狗是这么好的伙伴了！
