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Originally Posted by Choux Foxes are related to canines. Wolves, coyotes, dogs, foxes, dingos, etc. are all related. They have non retractable nails and they walk on their toes among other common traits. |
Dogs, wolves, and coyotes are in the Canus genus: dogs are species familiarus, wolves are the species lupus, and coyotes are in the species "wiley". Sorry, I forgot.
Animals in the same GENUS can successfully, on a biological level, reproduce. Breeding between the same GENUS and SPECIES results in BREEDS [which really have no dignity of true nomenclature, other than the nickname 'variety' or 'serovar']. Therefore the mexican red wolf, arctic grey wolf, German Shepherd Dog and Yorkshire Terriers COULD, theoretically, successfully inter-breed and produce viable offspring. The offspring SHO ULD theoretically be fertile. But I would not approve of these 'mixed marriages'.
Dogs and wolves can and have inter-bred for millenia; i do not think dogs / wolves and foxes are able to successfuly reproduce; they have differing numbers of chromosomes; so when the initial possibly fertilized cell divides, it fails and dies.
Cheers!
sammie [10-21-2008, just found this].