We got our little girl when she was 10 weeks old, and she finally was potty trained by one year. However, we dealt with kidney failure in the first three weeks we had her. Anyway, she is more stubborn than not trained. She hates wet grass. She will tell us most of the time when she needs to go out, but she will also sneak around. She is nearly six. I find it is more of a behavior issue than actually being trained since she certainly was easy to teach everything else.