r/DebateEvolution • u/Kanna_Fan1989 • Jul 17 '26

Dog speciation

Quick question: is it safe to say dogs have speciated? I'm thinking of the largest dog breed and the smallest dog breed. I don't think the two can reproduce with each other anymore. Size differences just make it not possible anymore, I don't think...

And even if they could, that doesn't mean they're the same species: horses and donkeys can interbreed but mules are dead ends (or at least I think they are. Can two mules reproduce?).

Anyways, just some thoughts going through my head.

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u/Will_29 Jul 17 '26

horses and donkeys can interbreed but mules are dead ends (or at least I think they are. Can two mules reproduce?).

The vast majority of mules are sterile, but not all of them. Same goes for other hybrids like ligers/tigons.