In the forest hidden among the trees lies a village full of animals. They live by their animal gods' words. Once every full moon they receive a message from the gods. Occasionally it is a warning hidden among words of mystery. This is one of those cases. The leaders of this animal pack bring these messages to the wise riddlers of the Stack Exchange Cave. This message reads these cleverly spun words:
The answer lies within the group
Slowly rattling its brain for a plan
It is a watching, stalking, creeping rat
Is it you? Is it me?
The trick is it treats you like kin
Is it you? Me, you, or him?
The answer lies within, for the right answer is in the group
What is this dire warning? Can you save the pack?
Hint- It doesn't have to be an animal. You could imagine the pack was a city, or anything else.
Hint2-Tags for this puzzle could be cryptogram and poem