I think it would be a good idea to create "groups" in your pride.

For example,

There can be a button in your pride overview page that says "Create groups" then you click on it anD two boxes show up

The first box says, "group name" you can name it whatever you want (i.e for sale.. cubs.... elders... heir/ royalty..etc.)

The second box has a list of all your pride member then you select the lions in the group

Once you have everything settle you click create group.

Once you go to your main den page, the lions you selected are seperated in a section from the other lions.