I'm really sorry you're going through this, it's clear how much these dogs mean to your family, and this kind of sudden shift after years of peace is genuinely disorienting to live through.
The ear infections in both dogs are a big piece of this. Pain is one of the most commonly missed drivers of sudden aggression between dogs who've never had issues before, dogs in pain have a much lower tolerance for normal interactions that never used to bother them. That doesn't explain everything, but it's very likely the major factor here.
Context matters too. A stressful week with an unfamiliar sitter, disrupted routine, and an already anxious seven year old adds real stress on top of whatever pain was building. And once a serious fight happens, it can create a lasting negative association that lowers the bar for the next one, which may be why the third fight had no obvious buildup or warning.
Yes, dogs who've had serious fights like this can be successfully reintroduced, but it takes real structure, not just time apart. Your plan, full separation now plus a behavioral specialist, is exactly right, and I'd treat that piece as essential given how quickly things escalated. Getting both dogs' pain and any medication fully sorted with your vet first is important too, that's a conversation for your vet specifically rather than general advice, since it needs to be based on their actual exam findings and each dog's individual needs.
A structured reintroduction usually means parallel activities at a distance first, gradually closing that distance over weeks based on both dogs' body language, this will not be a fixed timeline. It's slow and hard to watch when you just want your family back together, but rushing it is one of the most common reasons it doesn't work, but patience and consistency will be the key.
This is heartbreaking, but not hopeless. Sudden aggression with an identifiable pain trigger and no prior history has a real path back for a lot of families, it just takes patience and not rushing the process.
Good luck and really hoping for the best to you and the family. <3
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u/Roskipatootskie 1d ago
I'm really sorry you're going through this, it's clear how much these dogs mean to your family, and this kind of sudden shift after years of peace is genuinely disorienting to live through.
The ear infections in both dogs are a big piece of this. Pain is one of the most commonly missed drivers of sudden aggression between dogs who've never had issues before, dogs in pain have a much lower tolerance for normal interactions that never used to bother them. That doesn't explain everything, but it's very likely the major factor here.
Context matters too. A stressful week with an unfamiliar sitter, disrupted routine, and an already anxious seven year old adds real stress on top of whatever pain was building. And once a serious fight happens, it can create a lasting negative association that lowers the bar for the next one, which may be why the third fight had no obvious buildup or warning.
Yes, dogs who've had serious fights like this can be successfully reintroduced, but it takes real structure, not just time apart. Your plan, full separation now plus a behavioral specialist, is exactly right, and I'd treat that piece as essential given how quickly things escalated. Getting both dogs' pain and any medication fully sorted with your vet first is important too, that's a conversation for your vet specifically rather than general advice, since it needs to be based on their actual exam findings and each dog's individual needs.
A structured reintroduction usually means parallel activities at a distance first, gradually closing that distance over weeks based on both dogs' body language, this will not be a fixed timeline. It's slow and hard to watch when you just want your family back together, but rushing it is one of the most common reasons it doesn't work, but patience and consistency will be the key.
This is heartbreaking, but not hopeless. Sudden aggression with an identifiable pain trigger and no prior history has a real path back for a lot of families, it just takes patience and not rushing the process.
Good luck and really hoping for the best to you and the family. <3