I'm not trying to be rude I'm just saying that it feels a tad bit ignorant to completely ignore all other possibilities. Like I said before I don't think they should INTENTIONALLY breed mix species, but there is a whole nother world that remains undiscovered when you refuse to even consider it. How many breeds of dog do you think there would be if they never cross bred, really any animal. Cats, fish, birds, lemurs and so on. I'll admit that I am no where near an expert in amphibian care, I understand the importance of keeping a pure bloodline especially in a dying species. I must say though, if Charles Darwin taught us anything it's that life has to evolve it'self to survive.