These last few centuries/thousand years, man has produced through artificial selection breeds ranging from the Great Dane to the Chihuahua. The world is approximately 4.6 billion years old.
In other news, Bulldogs rule. Over to you Chet ...
I don’t think there’s any chance we’re 4.6 billion years old, there is zero scientific evidence to support that.
Also, once you go hound you don’t go back (coonhound for example). hehe