"While your lioness/sub male were on a hunt/patrol they got injured (how they got injuries here) and they have (said injury here) and will need to rest for x amount of days before they can hunt/patrol again"

Perhaps the game can add injuries to the game since in all reality, animal get hurt in the wild, as it may annoy some players to have one of their best lionesses get hurt and be annoyed and have to wait until they are healed.

There could also be another option of healing besides letting the lion heal over time, herbs. In explore you could find herbs randomly as we already do with the gems. Each herb will help heal certain injuries.

This could possibly be a cool addition to the game in my opinion :)