2个英语谜语The wandering bearOnce upon a time there was a bear th

2个英语谜语
The wandering bear
Once upon a time there was a bear that decided to go for a walk.It walked one mile south.Then it turned and walked one mile east.Then it turned again and walked one mile north.It ended up exactly where it had begun
What colour was the bear?
The clever lamb
A lamb was very hungry and wanted to eat some grass.Under a tall tree there was nice big patch of fresh green grass.But a fierce dog tied to the tree would not let the lamb come near.Finally the lamb had an idea by which he could outwit the dog and eat the green grass.
Can you guess what the lamb did?