Solution:

Bella is on the stairs. The direction of her head is up, so Thundy is above her. The direction of her feet is down, so Momo is below her.

Solution:

The direction in which the giraffe is looking is its front, so the squirrel is in front of the giraffe. If the giraffe turns around then he would be looking back, so the eagle is behind it.

Solution:

There are a watermelon, an apple, bananas, and an orange inside the basket. Under the table is a cat.