Crane repeatedly uses animal images to describe the regiment’s fighting in The Red Badge of Courage. What are the three animals?

Among the animal images that Stephen Crane uses to define
the fighting men in The Red Badge of
Courage:

• Henry considers himself
  filled with "eagle-eyed prowess" (Chapter
  I)


• The new soldiers were referred to as "fresh
  fish" (Chapter I).


• The narrator
  described the enemy in the darkness that "moved like monsters" (Chapter
  II)


• The narrator repeatedly compared the
  invincible Confederate troops as "dragons."


• The youth saw
  the troops before him laid out in two long lines like "serpents" (Chapter
  II).


• The forms of his comrades looked
  "satanic" in the shadows (Chapter
  II).


• The Union skirmishers were "busy as bees"
  (Chapter III).


• Henry was worried
  that the Confederate troops would kill his comrades "like pigs" (Chapter
  III).


• War is referred to as the "red animal"
  (Chapter III).


• Henry also worried
  that if he cried out a warning to his regiment about the impending onslaught, he would
  "turn into a worm" (Chapter
  III).


• The regiment dug into ground "like
  terriers" (Chapter III).


• The
  retreating Union soldiers ran like "wild horses" (Chapter
  IV).


• The colonel of Henry's regiment began to
  "scold like a wet parrot" (Chapter
  V).


• Henry compared his "exasperation" as that
  of a "well-meaning cow worried by dogs" (Chapter
  V).


• His rage was like a "driven beast"
  (Chapter V).


• When he turned from the
  attack, Henry "ran like a rabbit" (Chapter
  VI).