Dude, I live in the real world, I can only suspend my disbelief so much! I can’t just forget how mules are made! The brain keeps thinking and it doesn’t stop when I tell it to lol
There are cases where species can have a fecund offspring, like the axolotl and the tiger salamander.
or homo sapiens and homo neanderthalensis
Polar bears and grizzly bears too.
the species thing isn’t exactly what you said. there are 3 things that can happen that i remember:
1: most cross-species breeding results in nothing.
2: some, like horses and donkeys, or tigers and lions, results in babies that will grow up normally except that they can’t breed themselves.
3: and rarely, like in grizzlies and polar bears, the result is a baby that will grow up perfectly and still be fertile
interbreeding in DnD would be the 3rd option.
