Videos like this give us a small picture of what it will be like in the new heavens and the new earth, when all fear is removed from man and animal.
This video has more than 10 million(!) views on Youtube.
The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid; and the calf and the young lion and the fatling together; and a little child shall lead them. (Isaiah 11:6)