Brilliant, but Lazy: Several episodes show Norbert more willing to sit back and smell the flowers than Daggett, but as some episodes such as "A Dam Too Far" show, he's a very brilliant when he puts his mind to it.
For example, in "Dag's List", Daggett comes come one day after getting thrashed by random thugs. Norbert promptly gets him an organizing notebook so he'll remember who to get even with next time. The reason? A brotherly prank to get Dag even more thrashed. Thankfully, it backfires by the end of the episode.
Not so Above It All: A few time in the series, but especially in Muscular Beaver 5, where it's revealed he revels in the opportunity to be Baron Bad Beaver and let out his "evil" side when no one's around (and to "wear my undies on the outey-side.")
Real Men Wear Pink: Whenever he's seen wearing clothing, it's almost always in a pinkish color scheme.
The Unfavorite: Dag is apparently liked the best by both their parents (specifically when the two are actually getting along), although they do seem to love Norb equally, Dag gets more attention because of his blase acceptance of his parents quirks. Their mom even sends Norb treats every month to make up for it.
Verbal Tic: He tends to mispronounce or overemphasize word syllables.
Daggett Doofus Beaver
Voice Actor: Richard Steven Horvitz
The younger (and angrier) brother.
Tropes associated with Dag:
Animal Motifs: While already a beaver, Daggett's design is pretty shark-like, down to his fin like ears and razor sharp teeth. This is alluded to when he chooses a water scooter painted as a shark in "Beach Beavers A Go-Go".
Book Dumb: His main method of turning stuff on or off pretty much consists of hitting it ("Stupid, eh *whack*! Stupid, eh *whack*! Stupid computer *whack*!), yet he can build a remote vest-controlled animatronic robot, as seen in "Long Dag Night." Dag certainly qualifies.
Genius Ditz: He has his moments, such as when he cured an incurable disease in "Stinky Toe".
Girls Have Cooties: Is grossed out about the prospect of having a girlfriend. This actually becomes a part of the plot in the episode "The Mighty Knothead." Weirdly enough, near the beginning of said episode, Dag seems a little smitten with the raccoons' leader. It's only after she declares he has to be her boyfriend that he freaks.
He also fell in love with a Fish Hook though that was portrayed as a girl
Good Parents: When he once thought a baby mongoose that had wandered into the dam was his child, Dag showed to actually be a pretty good caregiver. His one downside was blindly letting Norb look after "Gary" for a while, though this gets subverted when Norb is unable to get rid of the baby because he bonds with it.
Green-Eyed Monster: Many episodes seem to focus on his envy of Norbert when good things happen to the latter. Take the episode "Gift Hoarse", for example, when his jealousy over Norb getting a cooler Arbor Day gift than him drives the rest of the episode.
Super Strength: Yes, really. In one episode, his attempt to build a dam over the "Little Meanie" river saw him carry a tree the size of a mountain by himself. In another, he can be seen hauling huge piles of pipes, metal and wood that would ordinarily be too heavy for just one beaver to carry.
Vitriolic Best Buds: With Daggett. Most times he can't stand him, but doesn't seem to mind and even likes it when Daggett helps him find his groove in "Un-Barry-able."
I Just Want to Have Friends: He planted the threat letter in "My Bunnyguard" so Norbert and Daggett would hire him and he'd have someone to "bodyguard" and hang out with. When called out on it, he admits this is the reason.
What Does She See in Him?: Treeflower briefly fell in love with him, although it was pretty clear he didn't feel quite the same way. He broke off their short-lived (as in day-old) relationship, which freed up Treeflower for Norb, but she friendzoned him.
Literal Genie: In her second appearance, she grants Dag's wish to get the last word in by saying "it ain't over 'till the fat beaver sings," causing Dag to swell up into a morbidly obese beaver who belts out musical insults.