So much wrong here, I'm not sure where to start..

http://chattanooga.ebayclassifieds....d-great-dane-standard-poodle-mix/?ad=18146555

They even have pics of the parents... sorry looking dogs

Why are the pups docked

Well Poodles are docked..although why one would bother docking pups of an odd breed mix is beyond me

People do that all the time here-if the breed is a mix and one parent is of a traditionally docked breed, they'll dock the pups. I've also seen a litter of boxer/pit bull mixes where the pups with more boxer like coloring were docked, and the ones with more pit bull like coloring were left natural.

I don't understand the logic but it seems very popular.

As to the OP, I think some people are just driven to breed anything with the proper plumbing. When I found out that my parakeets where both female (they are siblings), I can't tell how many people were disappointed for us. "Oooooh, your not going to be able to breed them....What a shame!" Nope, not a shame at all. I don't want to hand raise baby birds and even if I did I wouldn't be breeding full siblings to get said baby birds.

Great DaNoodles? Ugh. I have no words.

Is docking not illegal in the states

Nope.

"Hey look, my dane is black and white, my poodle is black and white, they should be bred!"

I'm trying to figure out what is up with the Dane's eyes. The photo is bad, but one definitely looks wonky to say the least.

.....wow.

It's popular here too, but I don't understand it, lol. A former coworker had a dog from a litter from a female Pit Bull and a who knows what dad. They said Bull Mastiff (because the pups were brindle..) but every single puppy was small and decidedly Pit Bull looking. (except one who had a very clear, fat Shar pei muzzle). Every pup was docked None of the breeds in that equation are docked breeds....

*sigh*