My dog can climb trees

Belle hates squirrels. When we moved to our house, we discovered that tons of them live in our back yard. This has driven Belle crazy. One day the hatred grew in intensity. She got one in her mouth. Not being a real hunting dog, she had no idea what to do with it, so it got away only to bite her nose. Now my sweet, loving, cuddly dog has a passion to get those squirrels (who we've named Mrs. Tibbs). In this passion Belle has discovered it is best to go get them in their own home. So she has learned to climb the tree. Imagine my surprise when I looked out my dining room window and saw her up on a branch howling at the squirrel who was just out of reach!