Favourite Winnie-the-pooh Stories (Week 6)

  Main character of this time is Tigger, but at first this book starts always about Pooh.
  One day Pooh wanted to meet Eeyore because Pooh haven't seen him since yesterday. So he started walking to visit Eeyore's house with singing a song. But suddenly Pooh remembered Owl because Pooh haven't seen him since the day before yesterday, so he started walking to visit Owl instead of Eeyore. Pooh is a moody person. After the thinking, Pooh visited Piglet's house and met Piglet. Piglet was planting acorn around his house. Pooh thought of Kanga, Roo, and Tigger, so Pooh and Piglet decided to visit them.
  At the same time, Kanga, Roo, and Tigger were taking a walk around their house where they lives together. Roo asked Tiger "Can you fly like Owl? " Then Tigger answered "Yes! we're good flyer, only don't want to fly." They were at the Six Pine Trees. And Roo asked Tigger "Can you climb this highest tree?" Tiger answered "Yse, of  course." So, Roo asked Tigger to climb the highest tree with Roo carried on his back, and Tigger staretd to climb the tree.
  However Tigger didin't clibmed the top of the tree and stayed there with Roo.
  Why didn't Tigger climb the top of the tree?

  Next, maybe understand the reason...