Sounds to me like she is defending her territory. Also dogs that are not regularly around kids can have big problems with kids -- or just in particular situations. A baby in particular is a strange thing to many dogs, makes strange noises and is very unpredictable and small.
I think this situation really requires a professional trainer for evaluation and advice. I know Tara and Lisa are really busy at the moment but they might have time to respond to this thread later in the week.
I would sure not find it acceptable to allow another dog to growl and pin other visiting dogs. But I would agree that the dog should be kept away (crated, penned, placed in a room) when a baby visits if these are one-off visits. It sounds very stressful to the dog to have a baby around.
Re pain: Pain is a possible reason for a dog to snap but it is not the most frequent reason. The most frequent reason is simply that the dog is uncomfortable with something happening around or to it, and people do not notice or know how to read the dog's stress signals. Given that children are bitten far more than adults, but adults certainly spend far more time with dogs, it is pretty safe to say that kids' very behaviour is more likely to induce bites because kids do things dogs don't like.
I think this situation really requires a professional trainer for evaluation and advice. I know Tara and Lisa are really busy at the moment but they might have time to respond to this thread later in the week.
I would sure not find it acceptable to allow another dog to growl and pin other visiting dogs. But I would agree that the dog should be kept away (crated, penned, placed in a room) when a baby visits if these are one-off visits. It sounds very stressful to the dog to have a baby around.
Re pain: Pain is a possible reason for a dog to snap but it is not the most frequent reason. The most frequent reason is simply that the dog is uncomfortable with something happening around or to it, and people do not notice or know how to read the dog's stress signals. Given that children are bitten far more than adults, but adults certainly spend far more time with dogs, it is pretty safe to say that kids' very behaviour is more likely to induce bites because kids do things dogs don't like.