A bit of a dry subject to be sure, but I had never heard of infectious cancers before.
In summary: a lot of information on how canines are related to each other. With a short segment how there is an infectious cancer found on dogs that is genetically different from any existing breed and as such could be considered it's own species.
Barely related but the headline reminded me of this video on the ontology of dogs and their infectious cancers.
https://www.youtube.com/watch?v=YerdELZuEhY (Clint's Reptiles "Not All Dogs Have Bones")
A bit of a dry subject to be sure, but I had never heard of infectious cancers before.
In summary: a lot of information on how canines are related to each other. With a short segment how there is an infectious cancer found on dogs that is genetically different from any existing breed and as such could be considered it's own species.