I have no knowledge about this breed, but my quick google search suggests an adult morkie should weigh 4+ pounds. I've included a small chunk of the information from the articles I found and underlined the paragraph is the link to the source. I'd call a local vet just to be sure if I were you.
Weight
The Morkie usually weighs between 4 and 8 pounds and is generally 6 to 8 inches tall at the withers. The big difference in potential size depends on which breed your Morkie puppy takes up after- Maltese or Yorkshire Terrier. Either way, this is a very small dog. Only their personality is large and trust us, that’ll do!
Link to source of information above
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Full grown Yorkies, Morkies and Maltese that are less than 4 pounds have lots of problems right from birth. These include:
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Weight
The Morkie usually weighs between 4 and 8 pounds and is generally 6 to 8 inches tall at the withers. The big difference in potential size depends on which breed your Morkie puppy takes up after- Maltese or Yorkshire Terrier. Either way, this is a very small dog. Only their personality is large and trust us, that’ll do!
Link to source of information above
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Full grown Yorkies, Morkies and Maltese that are less than 4 pounds have lots of problems right from birth. These include:
- More health problems. They are more sensitive to potential hazards around the house than ‘full size’ dogs of the same breed. A jump from the couch can break a leg and they can have chronic diarrhea.
- A super small dog faces high risks if an operation is needed, even common neutering.
- Very small dogs are harder to house train. Their bladders are that much smaller and owners say it takes at least 6 months to potty train a teacup.
- Teacups normally need a lot of attention and can’t be left alone for a long period of time. They need food more often – at least 3 or 4 meals a day, and can be very high-strung.
- Teacups usually have a much shorter lifespan. Most toy dogs have a life expectancy of 12 to 15 years but a teacup can live as short a life as just 5 or 6 years.
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