Technically as people we weren't (well not normally at least) bred with a standard in mind and considered matched under controlled and planned off spring outcome breeding.
But anyone who guarantees size is a liar IMHO-it's their best guess based on generations of pups produced and where they finish out at. Other wise every Yorkie would be exactly within the standard perfect clones of eachother etc, and no show breeder would re-home a pup at a year prospectively because they didn't finish within the standard.
However there are some breeders who have never had a dog out of standard and have generation after generation of perfectly size charted puppies finishing where expected. |