You have to evaluate each individual dog. A lot of Yorkies that are teeny tiny are perfectly healthy and are just small, on the other hand a lot of Yorkies with hidden health issues simply stop growing.
With teeny tinys (under 3 lbs) the need for extra caution with a teeny tiny -- is that there is a smaller margin for error in everything. The tiny little ones tend to have less body fat (proportionately) and therefore has less in the way of energy reserves. A hefty 7 lber is less likely to have problems if he/she decides he doesn't want to eatand misses a meal, but one missed meal can send a tiny 3 lber into a major hypoglocemic episode. A slight error in medication dosage can spell disaster, their bones are smaller and thus more fragile, etc. etc. etc. |