Husbandry is the animal care element of the Harvest Festival collection. It adds the requirement to care for your animals. Doing so will level them up and have them produce more products for you, rather than an infinite amount. Each animal has its own traits and behaviours and you will able to carry or pet them. Mammals will need to be impregnanted in order to give birth to young and chickens will lay eggs that must then be incubated to hatch. There are blocks to automatically feed your animals to keep them happy. Without food they will become unhappy!
This mod is fully customisable and if you want to see how to add other mob entities or how to tweak them see the Husbandry:Customisation page. For KubeJS support see Husbandry:KubeJS.