I know its scary to see a change in behavior but its a scary thing for Luka. Ella was not aggressive at all and even did pet therapy which I stopped before she was diagnosed with SM. I noticed a behavior change and she was more reserved. The reason was she was in pain and even though she didn't act out, it was not comfortable to be touched which is something vital in therapy.
There was one time that a little dog jumped on her neck and she snapped. I actually feared she would hurt this dog but it was her way of protection. If I had a broken arm and someone jumped on it I would scream. Ella was not on prednisone then, but it is something to always consider with an SM dog. She still was outgoing but when she felt good. On days she didn't she liked the protection of her crate. Sometimes she didn't even want me to hold her. If I picked her up the wrong way, she would yelp.
I could not change this behavior and I was sad that she felt bad. My parents had a lab that developed cancer and was old. He started displaying aggression which the vet compared to an old person with alzeimers being scared and not knowing what is going on.
Actually, ella was attacked by a dog. I found out that this dog was old and very sick. There were people at the house along with other dogs. Ella went through introductions but this dog was tired and wanted to lay down. Ella went up to the dog and he snapped.
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