Movie Question?

The Fox and the Hound

Pixar short was Knickknack 

That's a tough one.  Not sure, really.  We saw plenty int he theater, including some of the sort they didn't make for a while, like Bear Country.  The ones I saw as a child were Snow White, Pinocchio, Fantasia (the original), Dumbo, Bambi, Song of the South (which is NOT racist), Cinderella, Alice in Wonderland, Peter Pan, Lady and the Tramp, Old Yeller, Sleeping Beauty, Swiss Family Robinson, The Parent Trap (original), One Hundred and One Dalmatians, The Incredible Journey (original), The Sword in the Stone, all of which came out before I was born.  Others later, of course, but the first I watched would be in this list.

It was probably Fantasia.

Swiss Family Robinson (1960) 

I think it was "Son of Flubber"

Mary Poppins , as I recall. 

101 Dalmations...in the early 1960's