You say your little 2 pounder can't go under anesthesia bc she is so small...what if something life threatening happens & she needs to go under for surgery? Isn't that reason enough as to why having a 'teacup' is so risky?
No reputable ethical breeder will purposely breed for these tiny fragile ones. Yes, it can happen naturally. Most unethical breeders will breed very small females (2.5-3#'s) to beget tinies. This is the problem. They will put their precious female in danger, even put her life @ risk just to make $$$. Health, which should come foremost, takes a back seat w/these unscrupulous breeders.
The word 'teacup' Yorkies (& other breeds) is a made up word by unscrupulous breeders, brokers who purchase 5-6 week old pups- sells them as 8 week & older pups to unsuspecting buyers & puppy millers to make $$$. I do not understand the fascination & ignorance of intelligent dog loving people using this word (i.e celebrities)...it makes me cringe.
I wish you many happy healthy years w/our little one. When & if AKC ever recognises the word 'teacup', hopefully I'll be in my grave resting peacefully.
From wikipedia:
Yorkshire Terrier - Wikipedia, the free encyclopedia
"Teacup" Yorkshire terriers is a term used to describe very small Yorkshire terriers. The AKC and other Kennel clubs doesn't acknowledge the Teacup as a variation of the breed or recognize as a separate variety.[55] Usually a teacup is any dog weighing less than 4 lbs (1.8 kg) when fully grown, when the actual breed standard is given at 7 lbs maximum. Breeding for "Teacup" is a controversial practice that is not encouraged by responsible breeders.[56]
A fashion pressure, they are bred to appeal with their puppy-like features, rather than bred to expel health issues. There is great risk to a dam (mother) during pregnancy who is too small, most of these litters are a result of cesarean sections and have a high mortality rate .[57] There are many health issues associated with teacup dogs, such as luxating patella, heart disease, hydrocephalus, hypoglycemia, chronic pelvic pain syndrome, open fontanels and seizures.[58]