this is a pretty simple suggestion, i didn't see any other boards about it yet, but if this is in the wrong area or already done / being done, do whatever is needed!

i noticed that every day, the icon for a pregnant lioness gets more and more intense until the day before her birth, showing how close she is to birth

this system could be useful for the icon a lioness in heat has, and anything else, just a few minor changes each day that represent how much time is left of her heat

examples could be brightness, maybe more flames, or something like an exclamation mark on it, once she is on her second-til or last day of heat
this could be useful for if you plan on breeding plenty of lionesses and/or get too busy to get a chance at checking all of their pages for the timer, etc

sorry if this mightve been mentioned already or currently planned, i just now revived this account again