Goof: In "The Big Frog", Dag takes a pair of scissors and snips off some of Norb's long hair which (needless to say) ticks Norb off. Norb then grabs a wig to cover up the portion of hair that Dag cut off, but a few seconds later we see Norb take off the wig and his hair is magically restored!
In Dagski and Norb it opens up and says "Nick not @ Nite" which is a reference to "Nick @ Nite".
Goof: Norbert's middle name is Foster in this episode but in previous ones he was refered to as Norbert B. Beaver.
Goof: When Norbert is looking at the magazines featuring Daggett, his arms are brown. They're normally yellow.
Norbert's film shown at the beginning of the episode (entitled "Citizen Norb" on the tape we see Norb remove from the VHS) is a reenactment from the ending of Citizen Kane, a 1941 film by Orson Welles.
Goof: Daggett's Angel Eyes Lure switches position from under his tail to the top throughout the episode.
Goof: In "Strange Allure", Norbert is wearing a surgery uniform and Daggett is dressed in 18th century clothing before they roll down the hill. When they roll into the dam, they are not wearing anything like they usually do.
Goof: In one scene, there's no bridge and in the another scene, there is! And in another scene, it's gone again!
Goof: When Daggett enters the closet in "Home Loners", he is still half hairless, burned, and bandaged. When we see him in the closet, he is back to his normal self.
When Dag presses on his Dad's stomach trying to make a poo sound, their Dad shouts out "DAG!" Dag pops up saying, "Yes." When this happens, his eyes are white. Dag's eyes are actually yellow.
When Norb is opening the medicine cabinet, you can see a camera man in the mirror.
Look hard: In "Pack your Dags", even though Norbert packed away the beds, you can see them on the left side of the screen still in place.
In "Born to be Beavers", the Beavers live in California (I think). In "Zooing Time", Daggett eats Abraham Lincoln's birth cabin, so they live in Illinois or Kentucky (Abraham Lincoln was technically born in Kentucky). In "Omega Beaver", the Beavers live in Oregon (the Beaver State). In "Tough Love", Daggett mistakes an alligator for Bing's girlfriend Wanda, therefore placing their residence in Florida.
Title Pun: The title or more specifically "Byoo-tox" is not only a play on "buttocks" but is also a reference to how Norbert and Dagget prounounce that word and of course a reference to the character with this characteristic.
The character of Harrington from "In Search of Big Byoo-tox" is a take-off of Donald Sutherland's character Oddball from the movie "Kelly's Heroes", due to his dog impressions and his aversion to "negative waves".
In "Moron-a-Thon Man", Barry rolls a log Daggett is on backwards. The log rolls down, a splash is heard, and orange drops fly into the air. But when we see Daggett, he is sitting in a mud puddle.
In "Up All Night II: Up All Day," Norbert and Daggett wake up in that SAME futuristic world from "Up All Night," but it's overpopulated by sheep, and Norb and Dag are OLD Beavers, since they slept.
Throughout "Whats Eating You?", especially the mine car scene, Norbert's eyes turn yellow.
When Norbert and Daggett are spreading their musk across the country, their journey begins in Washington when they usually live in Oregon or California.
In "Stump Looks For His Roots":
The cook shows Norb and Dag a school out the window that was built by Stump. You hear a buzzing noise in this scene and Dag cries out "There's a giant fly attacking the school!" The cook quickly smashes the fly with a piece of chewed gum. Problem is we never actually SEE the fly on the window. That buzzing noise comes from NOWHERE!