A kind is a kind is a kind. These remain the same kind but are different species. just like human kind, bird kind etc… never change into something that is no longer a Kangaroo.
And these are dogs. There are different species but all of the are from the Dog Kind.
Now if you based something on being related by how similar if looks, then this is who it might work. And science cannot prove it one way or the other.
The only problem is that similarity can start to look stupid as shown above.