baby animals is responsible for changing the appearance of the offspring of Minecraft animals, which, as you know, by default have a disproportionate appearance, especially on the head. In other words, they are stubborn babies. With this mod newborns will have a head proportional to their body, and therefore they will be a little more realistic.
With this mod installed, the offspring will adopt the appearance of their parents, as is the default, except in the case of chickens, where their offspring will have yellow feathers, simulating the yellowish appearance of chicks.
All these changes will affect the following animals: cats and ocelots, cows, pigs, chickens and rabbits.