I thought all aspects of this animation were done just right. There was enough sub-text in the characters actions, to make sense of it all, in a concise and entertaining manner.
The 'pigification' of the singer was kinda startling, but as the story went on, I just kind of accepted it. Any good story must have some unanswered questions... like how did a digested dog, shrink/mutate a human, to dog-size? I'm thinking it's more a question of ego (stature, height) than of magic, though a backstory about (for example) how the dog escaped from a Mexican bio-research facility... would've actually been a decent hook, had the first lady stopped to pick up the dog in the middle of the road!
The frame rate and animation is movie quality good. The plot might be a bit mature for younger viewers, but I'm very thoroughly impressed with this. You two did a superb job, thanks!