Knowledge of Dogs

In "In Trouble, Paulsen said " They had great, old knowledge; they had somthing we had lost." I think that means that dogs can do things that human can't do, such as they got great hearing and smelling ability. That is why they are used for searching things. They are also used as a guard. They know who should and shouldn't  attack. They can distinguish the difference. I think people can learn a lot of things from animals. For example: they can learn from dogs. Compare to human, dogs are very easy satisfied, like their food. Most of them won't ask for eating hamburgers or french fries. They don't drink beverage or alcohol. They just eat normal dog's foot and meat. Also, dogs know how to live by itself. You can see that the homeless dogs, they don't live in a comfortable house, they live in street, but they can still live very well. First, they can go look through the garbge can, they eat the things in it. Second, they can sleep every where they want, it can be in a box, in the park, or even on a rock. Third, they know how to find their companies. When a group of dogs is formed, they will go search for food and water together. That is why dogs are not easy to die even though they are homeless. I got three dogs in my house. Even though they are all very silly and stupid, they are nice pets. What I learn from my pets is that when someone is treating you nice, you should pay back.