The unique animal behaviors described. In 'Watership Down', the detailed description of the rabbits' social structure, their way of communication and survival strategies in the wild is extremely fascinating. It's like getting a peek into a whole different world.
The six parts might include the initial rebellion where the animals overthrow the humans, the establishment of the animal - run farm, the development of the commandments, the power struggle between the pigs, the gradual corruption within the leadership, and the final state of the farm where the pigs become as bad as the humans they once ousted.
The transformation of the animal's body during hibernation is interesting. For example, a bear's body temperature can drop significantly, which is very different from its normal state. This shows how adaptable animals can be to survive harsh conditions.
One Piece had the following parts:
Golden City
2 Pirate Hunters
Dorag's Memories
Monchi D. Luffy's Treasure Hunt
Adventures of Admiral Usopp
One Piece's Treasure
7 Revolutionary Army
8 Empty Island
Valley of God
Mermaid Island
Dragon Island
12 Chambord Islands
Justice Island
The Great Sea Route
Country of Fire
Water World
Desert
World of Ice
Magma
New World
The most interesting part might be the unique appearance of the strange animal. For example, if it has a combination of features from different animals like in the story where an animal had a deer - like body with scales. This goes against our normal understanding of animals.
I think the unexpected behaviors are the most interesting parts. A raccoon befriending a human is not something that happens every day. And the fact that elephants would protect a rhino which is not their own kind. It makes you wonder about the emotional and moral compass of animals. It shows that animals have a capacity for empathy and altruism that we might not always expect.
The story of 'Animal' is a thrilling adventure filled with mystery and excitement. But it's hard to sum up briefly as it has many complex plot elements.