[header] How to diagnose portosystemic shunts in yorkshire terriers [title] Be on the lookout for slow growth. [step] A puppy with a pss often grows less quickly and is of a smaller stance than its healthy littermates. The puppy may be poorly muscled and generally look' weedy' and underweight. 
[substeps] However, it can be difficult for an owner to recognize the puppy is stunted if it is an only dog. [title] Keep an eye out for the neurological signs of the disease.