When they DNA sequenced Neanderthal they found specific DNA sequences that are only found in people if they are of European or Middle-Eastern ancestry and consistent with there being interbreeding between humans and Neanderthals such that, of those populations 1-4% of their ancestry was from Neanderthal.
We and Neanderthal are related by common ancestry as well. Dogs are wolves that have been selectively bred by human beings. Wolves and coyotes are a better analogy as both wolves and coyotes share a recent common ancestor, and there is interbreeding such that many coyote populations might have some 1-4% wolf ancestry.
If your contention is that all species were designed de novo, they were designed with features in their DNA to make them look EXACTLY as if they share common ancestry, and that these ancestors were infected with retrovirus in their germ-line cells such that all descendants share that retrovirus sequence at the exact same location.
Wow, between that and tricks with starlight and radioisotopic decay, God must really have wanted to convince us (in error supposedly) that the universe is billions of years old!
Bullshit. All we're talking about here is simple logic and apparently that's asking too much in several cases. "Too remote to be descended from" is a transitive relationship.