Estimating weights for chihuahuas can be tricky! There are many factors that go into the exact weight of a full grown dog. Our estimates are a “guess-timate” only and are NEVER a guarantee. Everyone still wants to know how big the puppy will be, so even though it is not an exact tool, we use the charts below to help determine to the best guess of out ability. Feel free to use these tools as well. Just know they may not be accurate in every case.