Our 4.5 month old puppy has been almost perfect in every way, but this is the first puppy we have had that pees when she gets too excited. When she was younger, she almost always pee when she started to sit, but that has now gone mostly away. Now, if she gets too excited and she starts to sit, she will leak a small bit. She has no problem holding it in her crate overnight or for extended periods of time whatsoever, or if she's not sitting. I'm wondering if she has some sort of issue with her bladder or if this is something that she might grow out of. Thanks for any advice.