DIPDIPCLAN

We are cats, this is DIPDIPCLAN.
Meow!

Role explanation:
Kit - Kitten under six moons (months)
Apprentice - training to be a warrior/medicine cat
Warrior - hunts and defends clan
Elders - Retired warriors 
Medicine Cat - takes care of the sick cats and injured
Deputy - basically a co-leader, the deputy althought does have less power
Leader - a former deputy who was granted 9 lives by starclan

Terms explanation:
Moons - Months
Kit - Kitten under six moons
Twoleg - Human
Kittypet - Domestic Cat that lives with humans
Starclan - Basically cat heaven that gives prophecies
Clan - Group of feral cats that usually believe in starclan
Fresh-Kill - freshly hunted food
Crow-Food - food that is no longer good to eat
Monster - any human operated vehicle or machine
Thunderpath - roads