Nice request!
You’ll need a timer first.
Then you’ll need a bunch of popups. Make one of the call to actions select the animal you want to breed, and the other show the next animal. Then when you select it, make it set a property. Then show the popups again, but make them set a different property.
I might actually make a guide on this. I’m surprised nobody has made it yet. It will take a while, but it will have pictures and more details.