Quote:
Originally Posted by wolfdogs16
In prior definitions of the term "hybrid", fertile animals were part of the scenerio, but with the change in term to "hybrid = a mating of two difference species" infertile comes into play.
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This is mostly true, but as far as I know, crosses between wolves and jackals, although there is no doubt that those are two separate species, are fertile. Infertility is not a result of speciation, but mostly the reason. It is mostly due to different number of chromosomes, which cannot recombine properly and therefore not create functional gametes.
Quote:
Originally Posted by wolfdogs16
... and when the dog and wolf were determined to be the same species, USDA stated a cross between a wolf and dog is not a hybrid...
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Funny, why is then the rabbies vaccine not accepted for wolfs and wolf/dog mixes? As far as I know, this is the major problem in keeping wolf/dogs in some states...