Bento gets chased up a tree

Bento is my little buddy.  He follows me around the yard and house as I do chores, occasionally looking up and meowing at me.  Unfortunately, he also follows me out to the car, which usually ends up with my spending the next five minutes making sure that I don't drive over Bento.  He just isn't that afraid of engines yet, and I worry about him.  I was therefore happy when I started the car and saw him take off at maximum speed towards a tree.  "He's finally afraid of cars!", I thought to myself.  Shortly thereafter however, I discovered the real reason:  pursuit by a big unleashed dog.  Bento shot up a nearby tree with admirable speed:

but then required rescuing by me:  not easy.