Our 3 y/o rescued doxie, Maddie, every once in awhile...maybe once a week or so...puts off a nasty odor. Not sure if it is coming from the butt or vaginal area. She acts peculiar when this happens. ...
If it's a skunk-like smell then it's the anal glands. As stated, they may occasionally need to be expressed. It happens to our ESPs sometimes if they get really stressed or constipated.