There is also a well known ‘Red Wolf’ in the southwestern U.S. - a cross between Wolf and Coyote... the offspring are known to reproduce in the wild.
Amazing how much ‘common knowledge’ is absolute bunk. Journo takes it as axiomatic that such mixes cannot reproduce, and many think species are defined by what can and cannot interbreed.
Columbus also didn't ‘discover’ the world was round, it was common knowledge and the argument was not over the shape of the Earth but how far it was around (the figure of Eratosthenes was accurate, Columbus's figure made the journey optimistically shorter).
Since the Endangered Species Act, it is politically advantageous to treat every mutation of a species too common to qualify as if the mutation is the same as a whole new species, or if it is too slight in differences, as a subspecies, so that it can be defined as ‘endangered’ and grants may be procured to study and preserve it. In some cases such as the Florida panther it isn’t even unique enough to be considered a mutation so geographic isolation makes it a political ‘species-of-convenience’ so important to some organizations’ wallets and political agendas that they would sooner see it destroyed by inbreeding than admit that it is in fact nothing more than a common cougar by allowing the remaining population to be saved by increasing its genepool. There is more genetic variation between the chihuahua and the great dane than there is between a barred owl and a spotted owl, or between a yellow shafted flicker and a red shafted flicker, but with the dog breeds there isn’t the political “necessity.”