Deliberate mistake: Puppy Clifford engaged in a "tug-of-war" with a Rock Dove over a French fry and the Rock Dove WON, yanking away the French fry. Overlooking for the present purposes that the French fry did not even appear to be into animated Clifford's mouth, a Dove weighing maybe 13 ounces is no match for even a 5-pound puppy. Clifford probably weighed closer to 10-15. (00:10:40)
Continuity mistake: The angle of the laptop on the kitchen table changed (and no-one was close enough to have moved it). The laptop was initially more evenly aligned with the edge of the (round) table. A little later, the laptop was not visible, but probably should have been. (00:04:09 - 00:04:44)
Factual error: Rock Doves - even those used to people walking around in the city and on the sidewalks - would have flown away at the first sign of a predator, including a puppy - but they more or less ignored Clifford running toward them. (00:10:30)
Continuity mistake: The kitchen table centerpiece, a Lazy Susan-type bowl, was initially raised (about 2" with a visible shadow below) but was later flush with the table. The objects in the bowl also look different. (00:04:08 - 00:05:22)
