While viewing Las Vegas from the trailer, the camera is outside the window, and the buildings' neon signs' reflections in the window aren't backwards as they should be.
Angelica's cat, Fluffy, mildly growls at Chucky while he's baby sitting her. Cats cannot growl in any way. They can only purr, meow or hiss.
Chuckie's Saturn shirt is usually a yellow planet with a red ring. In the first season, a common animation error is for the colors to be vice-versa - with the colors sometimes changing between scenes.