As someone with pretty slow internet and a fair amount of lionesses in my pride, I've found that I often lose track of when lionesses are going to go out of heat which has cost me a couple of final breeding opportunities in the past.

I was thinking that a feature could be added akin to the pregnancy icons on lionesses where the heat icon could perhaps change colour or shade as the days left to breed your lions go down? It'd be pretty convenient to just scroll down your page to be able to tell who to breed when rather than clicking on individual pages.