Here's why:
* Gameplay Focus: Nintendo games prioritize gameplay and story over realistic biology. The focus is on the fun and engaging aspects of the game, not the complexities of animal reproduction.
* Child-Friendly Content: Many Nintendo games are aimed at a younger audience, and depicting animal breeding would be considered inappropriate.
* Game Mechanics: The way dogs are implemented in games usually doesn't allow for them to have babies. They are often considered "static" characters with pre-determined roles, not living creatures with biological capabilities.
However, there are a few exceptions:
* Nintendogs: This game series revolves around virtual dog care, and while it doesn't show dogs giving birth, it does allow players to adopt puppies and watch them grow.
* Animal Crossing: In this series, players can sometimes adopt a dog villager, and although it's never shown explicitly, there is a sense that these villagers have their own families and histories.
Overall, while dogs in Nintendo games don't typically have babies in the traditional sense, there are a few exceptions and instances where the concept is hinted at.