Hi there, new here and hate this type of post to be my first but here goes.
we have a almost 4yo GSD Phoebe, she recently has gotten scarily aggressive toward our other dog, a Corgi. Out of nowhere she will pin him to the ground and attack him. These 2 have lived together for 2 years without incident they loved eachother. The attacks are so random and have come about so recently I believe there is a medical reason to blame. She has been on phenylpropanolamine for quite awhile now and I am pretty sure soon after that's when the aggression began to show itself. I've researched a bit and have seen a fe have had similar occurences with their dogs, was wondering if anyone else had an opinion on it. She is scheduled to go in to the vet and we are going to talk with the vet about this and other causes of sudden aggression but if anyone has any thoughts on the matter I would love to hear them. Rest assured as well we are keeping these 2 separated until we can figure this out. We have owned dogs for over 20 years, most of them shepherds and have never encountered behavior this baffling.
ETA: I apologize for any spelling errors, typing from my phone!
we have a almost 4yo GSD Phoebe, she recently has gotten scarily aggressive toward our other dog, a Corgi. Out of nowhere she will pin him to the ground and attack him. These 2 have lived together for 2 years without incident they loved eachother. The attacks are so random and have come about so recently I believe there is a medical reason to blame. She has been on phenylpropanolamine for quite awhile now and I am pretty sure soon after that's when the aggression began to show itself. I've researched a bit and have seen a fe have had similar occurences with their dogs, was wondering if anyone else had an opinion on it. She is scheduled to go in to the vet and we are going to talk with the vet about this and other causes of sudden aggression but if anyone has any thoughts on the matter I would love to hear them. Rest assured as well we are keeping these 2 separated until we can figure this out. We have owned dogs for over 20 years, most of them shepherds and have never encountered behavior this baffling.
ETA: I apologize for any spelling errors, typing from my phone!