08-02-2018, 12:48 PM
Join Date: Mar 2012
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I don't think it's rage syndrome- it seems to have very clear triggers and rage syndrome is random and doesn't have a clear pattern of triggers.
Two instances are towards puppies? Some dogs just don't like puppies. Puppies are rude, socially inept, annoying, and sometimes don't know when to leave older dogs alone. Or it might not even be the behavior itself, she might just recognize the puppy is weaker than her and want to take advantage of that for whatever reason- maybe she is being possessive of you, her space, or toys/food. Maybe she is uncomfortable with other dogs and that leads to her picking on the weaker/younger ones.
The incident with the toddler- was she ever socialized with toddlers/babies? Many dogs categorize small children, toddlers, and babies as different from older children and adult humans. They move differently- awkward, quickly, etc; act differently; make a lot of weird, loud noises; and look different. If you don't socialize a dog with toddlers and they haven't really experienced them before, they could be scared or uncomfortable with them. It happened when he just entered the room- he could have even surprised her. I would just keep her separated from toddlers and young kids if she is uncomfortable with them, and they can also act really unpredictably and roughly towards dogs. Could be a recipe for a bite.
Not all dogs love every dog and every person. Some are introverted, some are shy, some are aloof, some are fearful, and some can just be jerks. Just like people. I would be very careful with her around puppies and kids. Maybe do some counter conditioning in their presence in a controlled environment. Counter conditioning with an appropriate amount of distance- not letting a toddler pet her while you're distracting her with treats.
I would keep her separated from your new puppy for now and get an experienced trainer on board ASAP. See what a professional who can evaluate the situation for themselves thinks about it.