The Bears and Bees is a Silly Symphonies animated Disney short film.
They nibble some flowers and find a bee, which they follow to the hive, which they then proceed to raid.
The big bear chases them off, but unknown to him, a bee spotted the raid and has summoned the attack squad.
The short was released on December 19, 2006, on Walt Disney Treasures: More Silly Symphonies, Volume Two.
[1] As Cubby and Tubby, the two lead cubs made a singular appearance in a 1945 Li'l Bad Wolf comic book story, then received an ongoing comic strip of their own in British Disney comics of the early 1950s.