Iíve talked with @GuineaPigpapa through private message within the last few months, but I would like to hear from everyone else as well.

Mocha is 6 years old, active, eating, teeth are fine, no issues elsewhere. However, over the last few months her weight has gradually gone down from 2 pounds to now 1 pound 13 3/4 ounces. Roughly 910 ish grams to 845 ish grams. Now I will say that I have seen her weight down at 1 pound 14 ounces 2 summers ago. In the same time her sister who is also 6 has gone from as high as 2 pounds 12 ounces, all the way to 2 pounds 8.5 ounces (she has always fluctuated like this, and has weighed anywhere from 2 pounds 6 ounces to 2 pounds 12 ounces). I just want to know if this seems like normal age related weight loss, just normal fluctuations, or a problem?