Here are a few recommended titles (and their corresponding descriptions) for Acting & Animation. You might like to check them out at the Library, or get a copy for your own reference if you like.
Acting in Animation: A Look at 12 Films by Ed Hooks


Powerful and empathetic performance in character animation requires far more from the animator than an ability to manipulate pixels or draw characters. You must have a strong understanding of the relationship between thinking, emotion and physical action plus dynamic scene construction.
Hooks breaks each one down sequence by sequence and gives you useful notes on how the animators of classics successfully imbued their characters with feeling. You'll see firsthand how attending to essential acting principles like choice, negotiation, conflict, and empathy creates unforgettable characters and believable storylines.
Acting for Animators: A Complete Guide to Performance Animation by Ed HooksThis book is as helpful to budding animators as Keith Johnstone's Impro is to actors!
Timing for Animation by Harold Whitaker
How should the drawings be arranged in relation to each other?How many are needed?
How much space should be left between one group of drawings and the next? How long should each drawing, or group of drawings, remain on the screen to give the maximum dramatic effect?
The art of timing is vital.
The Animator's Survival Kit by Richard Williams
The title says it all.