I hate the whole toy/mini/teacup/oodle/doodle thing.
Why?
Because 'teacup' is not a classification in any breed. Teacup is a marketing tool. People breed small dogs even smaller-usually to the detriment of their health-and then sell runty puppies to people who don't know any better for the same amount of money-if not more-that you'd spend finding a reputable breeder with healthy, proven animals.
For the oodles and doodles: Same thing, pretty much. These dogs are mutts. I love mutts. I own one. But I didn't buy him from a breeder, he came from a shelter where there are PLENTY of mutts-Poodle crosses included-already alive and waiting for homes. Again, it's a trendy marketing ploy to get people to pay heaps of money for something they could get for $100 at a shelter.
Mini/Toy dogs in breeds that don't HAVE a Mini/Toy class are the same, too. "Hey, these are nice, but I bet if we made them smaller they'd sell better!"
And in all of the above cases, when we're talking about Tiny-Teacup-Purse Chihuahuas, Labradoodles Goldendoodles Schnoodles Yorki-poos, or Toy Aussies or whatever other it's-a-Toy-but-shouldn't-be breeds, I've never found anyone who was breeding them in a manner that I think is consistent with being a responsible dog breeder. IMO, a responsible dog breeder does all of the following:
Breeds with a purpose. Being a pet is a purpose most any dog can fill, so I don't buy that. Now, improving a breed, herding ability, guarding ability, scenting, guide dogs, those are all good purposes. A breeder should have at least one of those in mind when planning a breeding.
Breeds proven dogs. Dogs that have proven through shows, trials, tests, or occupation that they can do (or ideally excel) at their purpose.
Does all applicable health testing. Eyes, hips, elbows, heart, vW...whatever diseases are prevalent in that breed should be tested for prior to breeding.
I really have nothing against the dogs. I'm sure a lot of those tiny Chihuahuas and "Mini Aussies" and doodles are great pets-in fact, I wouldn't mind coming across a Lab/Poodle cross in rescue someday. I disagree with breeding them, though, since the soul purpose behind them seems to be to make more of them and to make money off of them.