The only time I have separated a rat over something like that was Abu-Boo. He was literally out to kill Blazer and would viciously attack him the minute they were together, and it was so sad because Blazer was an absolute sweetheart. Abu-Boo was neutered already when he did that damage, but he was the worst case of rat on rat aggression that I have ever experienced.
Below is the wound that Blazer sustained. The entire shoulder was ripped apart and flapping open, and I could see that the muscle underneath was compromised as well. I was concerned about the damage to the muscle in his case, so I took him to the emergency vet and they stitched him up.
And just because Blazer was so damn adorable, I will include a couple more of him recovering with his brother.
Below is the wound that Blazer sustained. The entire shoulder was ripped apart and flapping open, and I could see that the muscle underneath was compromised as well. I was concerned about the damage to the muscle in his case, so I took him to the emergency vet and they stitched him up.
And just because Blazer was so damn adorable, I will include a couple more of him recovering with his brother.