What animals do you like?Why?

I like dogs best because they are our best friends。Dogs can do lots of things for us。Such as they can guard the gate,search the wounded people and search the drug。I grandpa has a little dog I often takes her to go out for a walk。She is so lovely and friendly that we all like her very much。When I play with her,I forget all my worries and she can bring me lots of happiness。I won't feel lonely when I with the little dog。