Most recent public comments by student Richard Keesee https://nowcomment.com/users/51685 https://nowcomment.com/documents/130446?scroll_to=1264688 https://nowcomment.com/documents/130446?scroll_to=1264688 I think all dog breeds are the same species, though I would argue that different sized dogs can mate with each other but that doesn’t change the species in my opinion. I don’t think different physical traits between dog breeds would make it a different species because size is a shared gene, which means dogs are similar with their genetics but have different physical traits. Wed, 20 Feb 2019 14:50:14 -0500