Conversation so far:
When did the Animal Style art develop?
animal art of the period roughly from 400 to 900 into three phases: Styles I, II and III.
What distinguished the three styles of animal art from each other?
Style I.
First appears in northwest Europe, it became a noticeable new style with the introduction of the chip carving technique applied to bronze and silver in the 5th century.

Question: What was unique about Style II?
Self-contained rewrite: What was unique about Style II?