This spell requires no ritual, but it can only be used on hurt animals and you must be Touching the animal (not suggested use for rabies). This is an ancient spell; it might not work, but don't let that discourage you. Believe in the power sent to the animal by you.
Suggested free e-books to read:
Aninymous - The Angelical AlphabetAnonymous - Hypnotism Spells
Anonymous - White Magic Spells
Leo Ruickbie - Halloween Spells