This episode was one of the two that were included in the new episodes' promo.
The Sewer Worm was technically a recycled version of the Sand Worm from the episode, Momnipresent, the only difference being that it's pink in this episode.
This episode revealed that Crocker's Mom is allergic to dogs.
When Timmy rolled the dice to Sparky for him to sniff it, the dice both landed on 6, adding up to a total of 12.
When Cosmo finds Mr. Crocker's note which says "I got Sparky," it is concluded that Mr. Crocker already found out what Sparky's name is. However, later on in the episode when Sparky is being hypnotized, Mr. Crocker asks him what his name is.
This is the first time Sparky is seen in the episode title card.