Cat Tribes of the Wild

Seven tribes of cats live together in a fantasy world where a desert can be between a forest and a rainforest.
Each tribe has special abilities, the Mud Tribe have impenetrable fur, the Sand Tribe are immune to fire as long as they are touching sand, the Ice Tribe have really tough claws for climbing rocks and walking on ice, the Sky Tribe can fly, the Sea Tribe have a special seaweed that lets them breathe underwater, the Rain Tribe can turn invisible, and the Night Tribe can sometimes read minds.
The leaders of each tribe can choose whether or not they want to have a second in command. Usually they choose someone close to them, such as a sibling, or their mate. However if forced to make a choice they will choose anyone. The second in command is not usually next in line to become the tribe leader but on certain occasions they will be.
But how are tribe leaders chosen? When a leader is alive they will choose a specific cat to succeed them. In the Night Tribe it's usually the current leader's daughter.
Quick terminology rundown: a molly is a female cat who either doesn't currently have kittens or cannot have kittens, a queen is a female cat currently expecting or raising kittens, and a tom is a male cat.
And more to come! (Also if anyone has tag suggestions let me know)