She is 4 months old but wont get much bigger then the size she is now. She is a mini. Bread to be small. I found her at a pet store in the window. I couldnt leave her there. She was 1/2 the size she is now so you can imagine how tiny. She was about 1 1/2 pounds when I bought her. She is 3.14 pounds now and full grown she will be only 5 pounds. She is a toe and ankle biter but she is getting better since she has been in training. She knows how to sit, give paw, wait at the door and wait at the curb until its ok to cross the street. She is a good pup. I'm so glad I found her.