In that sense,dog breeds wouldnot be classified as separate speciesunder most definitions. If those Chihuahuas and Great Danes don鈥檛 look like the same species right now,it鈥檚 only because humans are constantly maintaining a barrier between them.
People also ask
Can different dog breeds mate and have babies?
But among dogs, which are well known for their hybrid (or mongrel) varieties, different breeds can mate and have viable offspring, so they are all found under the umbrella of a single species, Canis familiaris. Dogs are highly unusual in their variation, from the Chihuahua to the Great Dane.
What are the most unusual breeds of dogs?
Dogs are highly unusual in their variation, from the Chihuahua to the Great Dane. (Recently, body size was found to be largely explained by differences in a single gene among dog breeds.)
How can we tell the difference between two species?
Currently species are still primarily distinguished by their appearance, but it is becoming very clear that looks don’t always tell us all we need to know about whether two organisms are different.
Why does science have a double standard on species classification?
Michael Bruford, a professor of biological sciences at Cardiff University in Wales, explains the thought process behind this seeming double standard. Scientists have been distinguishing between species on the basis of how they look, behave or live since recorded history began.