This mom was focused on getting her baby to say 'mama', by repeating the word over and over. The family dog sat by and wimpered until it turned into words where he can be heard mimicking the mother as he's saying 'mama'. It could be safe to say that the dog's motivation of imitating the sound was his desire for the food being waived infront of his face. Jealous of his quick studies, the baby pushes the dog away, still unable to say 'mama'.