I honestly don't know where to begin with this.
Countless cats and dogs are filmed against the 'poor man's' equivalent of a blue screen using some kind of poor man's video editing system and incorporating every single effect possible. Barks and meows are edited with their pitches changed to match the songs.
As for the rotating, flashing backgrounds, if you've ever wondered what it's like to trip on mushrooms, just watch 10 minutes of this bonanza of weirdness and you'll know.
Dogs and cats barking and meowing to "Havah Nagilah" make this a true multi-cultural seasonal experience. Worth every one of the 50 cents I paid for this at a thrift store.