Prob beast baby is somilar to elephant baby that can alr walk right after they born..I think the life expectancy is same like human, but its kinda hard for beast to hv baby beast.. They only can be borne via beast x omega human relationship
Beast baby grow faster than humans (as explained by the Tanuki on the previous chapter to Daath) so maybe even if it's just days old it can move around already. But even if they grow faster they still need some assistance so that explains why Horan should babysit him, cuz the baby couldn't possibly change clothes or bathe on his own.
If Kai is still recuperating from the birth then that baby is just a couple days old? Yet it moves around pretty well on its own, seems to understand spoken language and even cheers and says goodbye. Do these babies even need a parent or a nanny to look after them at all? I feel like if they were just released into the wild they would survive just fine LOL Also, are furry people's life expectancy lower than humans'?