My kiddos are 15 months (and Macy and her are like peanutbutter and jelly! No growling ever!), 6 years (no fussing at him either), 8 years (some slight growling from time to time) and 9 years (ALOT of growling here).
My Macy is 16 weeks now, almost 17.
I did get her from a petstore (i did not do my research beforehand, and kinda embarassed there

)
Anywho, the first time i heard her growling was when my older daughter was sitting on the couch... After petting her for pets sake! My oldest son plays with a her a little bit, but has his own agenda, and is usually outside with his friends. But when he came in this afternoon, it was like non stop growling and barking at him, until he was literally in tears, then she started growling a little bit at my daughter. So we decided it was Macy's bedtime, gave her loves, and put her in the kennel for a bit.
Shes absolutely wonderful with my younger two though. And up until the last few days, we've seriously had NO problems. She has been jumping in their laps for loves, and kissing them in the face. Im not sure why the sudden change. And of course, im worried about my kiddos
Thanks Again