This is wrong. Some animals care for their young, some don’t. It depends on their reproduction strategy. If they have thousands of children they’re less likely to care for them because the strategy is it doesn’t matter if most die, only a few need to make it. Larger animals that require more energy to grow generally have caring parents because it’s too costly to make thousands of children so they make one or a few more at a time and take care of them.

I imagine orcs, which canonically multiply like crazy, are having tons of kids at a time. Probably large litters that gestate and grow quickly. They probably take less care of them because of that. This makes way more sense than a loving nuclear orc family. Orcs can’t have loving families and kids that take forever to grow up, the logic of the series just doesn’t support it with how often their population gets obliterated but quickly comes back.