How much should a chihuahua weigh?
It all depends on the bloodline and what type you have. I have a 3 month old Chihuahua that weighs 3.5 pounds right now and won’t be more than 5pounds full grown. Check with the people you got it from and ask how big the parents are and how much the pup weighed at birth. Once you know how much the weight was at birth you can go and look at a web site they have for determining the weight full grown. It’s under Chihuahua weight and growth chart.
It depends on the dog, really. My aunt has a pure bred Chihuahua and he is about 14 lbs and not even a year old yet. On the other hand, I have a 9-month-old Chihuahua/Toy Terrier mix and she weighs about 7 lbs. We don’t know what she’s mixed with, though, so a pure bred could weigh more or less. I also had another Chihuahua mix who weighed about 5 lbs full grown. Again, no clue what she was mixed with. Hope this somewhat helps!