When Duke, the dog-butcher, comes to get one of the dogs out of the cage he leans his giant meat cleaver against Bingo's cage. When he hears the waitress screaming he puts the dog back in the cage and the cleaver has disappeared.
When Chuckie sees Bingo for the first time, he has not yet put his jeans on when he walks past the hanging clothes to meet him. In the next shot, he is wearing the jeans but not his shirt. The following shot, his shirt is suddenly on, too.