Plot hole: Near the end of the movie the original two "Daddies" from Daddy Day Care show up at Chapman Academy. Miss Harridan seems surprised to see the main Daddy (Charlie Hinton) show up while she is in the middle of talking with potential customers about what her academy has to offer. Following his speech he then proceeds to take a large group of them away from Chapman Academy to Daddy Day Care without any paperwork needing to be filled out or without any written consent from the parents. How can one day care just take children from another day care like that? The shot was uncut so confirmation of parental consent didn't happen between the time he showed up and the time he left with the kids. (01:22:00 - 01:25:00)
Plot hole: It's amazing that the two Chapman women weren't caught at "Rock for Daddy Day Care". One of them unzips a guy's dog costume in the middle of the path with everyone walking by. A little kid actually stares right at her when she does this. Also when Jenny puts the cockroaches in the salad, the people who were waiting in line for food would definitely have seen her. There are many more parts like this.
Answer: This dog belongs to the Klingon kid - he brings it in when it is Pet Day.
Kirsty Marshall