These are cryptic clues to cartoons and animated films. The sheet implies that they are Disney and book based. These both might be untrue. There's definitely Pixar, Dreamworks etc.
1 ASH AND FITZGERALD (10)
2 THE ONE AND ONLY RODENT (6,5) All of the answers I have so far are films hence I am unsure of the obvious.
3 UGLY BAT PIE SEEN (Anag. 8,6)
4 SOUNDS LIKE THEFT IN A HAT (5,4)
5 SILENT DEREK (5) I have Dumbo as in Dumb and NimmO. Anything better?