Br'er Bear is referred to as "Brother Bear" by Br'er Rabbit at one point in the movie, which is also the name of the Disney movie taking place in Canada.
Kenai's line "I'm not a beaver, I'm bea- no, I mean I'm not a bear, I'm a MAN!" is a reference to Merlin's line: "I am not a boy, I'm a squirre-, I mean I'm not a squirrel, I'm a boy, no, I'm... I'm an old man!"