Great sites
Mistakes
Shortly after the house takes off for the first time, in a scene where part of the city can be seen that includes various buildings and houses, the shadow of Carl's house and the balloons can be seen on the ground. At first glance it looks OK, but the angle of the shadows of objects on the ground is completely different from the shadow projected by the house. The buildings on the ground are projecting a shadow to the left, indicating that the sun is low to the right. However Carl's house shadow indicates a light source from behind the camera which is about perpendicular to the shadows on the ground. To be technically correct in this shot, all shadows must point away from the camera and the sun should be located behind the camera if the house's shadow is to be seen in the shot. See more...
Trivia
The term 'A113' is the number of the courtroom, and can be found on the gold sign Carl sits next too while waiting to be called (Courtroom A113). A113 is a frequent Pixar in-joke based on one of the room numbers for the animation program at Cal Arts. See more...
Carl: Russell, if you don't get up, the tigers will eat you.
Russell: There aren't any tigers in the woods. Zoology.
Dug: My master made me this collar. He is a good and smart master and he made me this collar so that I can talk. Squirrel!...My master is good and smart.
Carl: It's not possible!
Dug: It is, because my master is smart.
Beta: Treats. I smell treats. I like treats.
Dug: My name is Dug. I have just met you and I love you.