Animal Imagery

Animal imagery dominates Henry VI, Part 3, as in two passages here:

Margaret
And yet shalt thou be safe? Such safety finds
The trembling lamb environèd with wolves.
Had I been there, which am a silly woman,
The soldiers should have tossed me on their pikes
Before I would have granted to that act…
3HenryVI, 1.1.249

Henry
Revenged may she be on that hateful duke,
Whose haughty spirit, wingèd with desire,
Will cost my crown, and like an empty eagle
Tire on the flesh of me and of my son.
3HenryVI, 1.1.274