These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Doubles as Fridge Brilliance if you remember that there was a giant species of beaver that existed during the time the movies take place.
Base Breaker: Koda. You'll either find him cute or just annoying. Though funnily Kenai himself calls out Koda in-universe for being the "biggest pain in the neck ever", but it's "what you'd expect from a little brother" anyway.
I Knew It: How many didn't see Nita's transformation into a bear at the end of the second film coming?
Somewhere, a Mammalogist Is Crying: So it's apparent that Kenai is one ridiculously weak bear for having troubles wrestling a human, in both the original (Denahi) and sequel (Atka). In real life just a pounce of a grown bear's paw is enough to knock the average man unconscious, and don't even try to think you can outmuscle one; err.. you can't.
Kenai is supposed to be a young bear, not a full grown one. Although, a half-grown bear would still make for a frightening opponent.
Also, Kenai hasn't been a bear his entire life, so it can be Hand Waved by saying that he doesn't have the strength of an ordinary bear and doesn't have enough experience to use his strength to the fullest.
Though a deleted scene shows the entire story without singing, averting this trope.
In the introduction to said deleted scene on the DVD, co-director Aaron Blaise explains that the filmmakers felt that the confession scene and the song were basically the same beat in the story, so they were merged for simplicity. YMMV on whether keeping the song over the confession was the better choice, but one of them had to go, and we've already seen what Kenai is explaining to Koda anyway. Ultimately, it was redundant, so it was cut.