Any way to auto sell vivarium animals?

[marcraft15]

Those poison frogs multiply like crazy causing the "to many animals"problem. Any way to like autosell animals to keep a certain population?

[CaPY]

Can't we just keep youngest adult male and youngest adult female and just autosell everything?

[Banisha]

In my opinion, this game is also there to delve a little into what happens in the animal world. If the developers took everything out of our hands, where does the challenge appear? You are the one who decides when you want to give an animal up for sale. When YOU need the money.