Animators are human, what more can be said...
And the byline on the linked page is woefully inaccurate, Walt Disney was DEAD before all of these films were made.
"We all grow older, we do not have to grow up"--Archie Goodwin ( 1937-1998)
—
"We all grow older, we do not have to grow up"--Archie Goodwin ( 1937-1998)
That and Who Framed Roger Rabbit is at least half out of place on that page...
Might want to check here: http://www.snopes.com/disney/disney.asp?music=off