Is There Such a Thing as a Teacup or Toy Maltipoo?
Since the Maltipoo is a hybrid, or "designer" dog, there is no set standard size
(either weight or height) for this dog. Normally, the AKC, the most well known and well recognized dog kennel clubs in the United States, sets a certain weight range for each dog breed.
With that being said, the Maltipoo is a recognized hybrid dog....The CKC registers this dog as a non-purebred miscellaneous...However the National Maltipoo Club and the Maltipoo Club of America (Just 2 of many hybrid registries) has a weight range for this dog....
An adult "should" weigh between 5-12 lbs (2.27-5.44 kg).
Therefore, with "teacup" or "toy" being an adjective meaning "small" or "tiny", a teacup Maltipoo would be one that weighed less than 5 pounds when fully grown.
It must be noted that those who recognize the Maltipoo do not recognize the "teacup" or "toy" as a separate dog breed....or as a separate version of the dog. For example, the AKC recognizes 3 size varieties of the Poodle: The toy, the miniature and the standard.
If a breeder happens to have a puppy in a litter that is a bit smaller than the rest....and will grow to be 3-4 pounds, this is not uncommon. With many litters (of all types of dog breeds) there is often that 1 puppy that is smaller than the rest. The breeder may then refer to that puppy as a "toy"... This is considered to be ethical IF that person is using "teacup" as an adjective to mean "small". It is NOT ethical for a breeder to purposefully try to breed for puppies that fall far beneath the normal weight range for this dog.
Why? Because a dog with an adult weight of 5-12 pounds (2.27 to 5.44 kg) is quite small enough. If puppies are produced that only grow to be 2, 3 or 4 pounds...several health issues
can occur because of this: