Is a Wolfdog a hybrid? I hear so many people refer to them as this, but is this accurate? A true hybrid is when two different species breed together, like a horse and a donkey creating a mule. And most real hybrids are infertile, unable to produce offspring of their own. So what about wolfdogs? Technically, people often call them hybrids… but biologically, that’s not quite right. Wolves and dogs are not separate species. Dogs are simply domesticated, evolved wolves — the same animal on two diffe