It sounds like you might have rushed the intros.
From the way you are describing it, you put them together for the first time in a neutral location yesterday and they did fine, and then you put them in a cage together overnight?
If that's so, yeah, that's probably a bit too fast.
Ideally slower is always better. You'll want to have them get to know each other over several days (or if they just refuse to completely settle down) weeks. I'd back up and put them in separate cages again, and then start them slowly again in neutral territory: A barren controlled space with no hidey holes, and no 'shared' scents that one can claim over another. They should spend at the bare minimum 30 minutes a day like this, preferably longer. Do this for a few days until they've worked out their issues.
Only after they're comfortable lounging together in a neutral space and you don't have any 'displays' would I consider trying a cage.
Then if it were me, I'd flip flop their stinky blankets around for a day or three. Only once they've calmed down from all of that would I start fresh with a deep cleaned cage and brand new bedding (as neutral as you can make it scent wise). I might even rub each of them in the others' old soiled bedding/poo/urine to mix their scents so they go into the neutral territory smelling like each other. Someone else may correct me on some of this, but that's just a rough idea of a direction to take.
I'm doing intros right now too, so I understand what you're going through.
As for the injury, it's showy but pretty minor. You might want to take him to the vet if you're really concerned. But the vet at most would suture it, but more likely just clean it up and maybe put him on antibiotics to ward against infection.
As for what you can do yourself, here's a link to rat first aid. Scroll down to the injury section:
http://ratfanclub.org/firstaid.html
Good luck!
From the way you are describing it, you put them together for the first time in a neutral location yesterday and they did fine, and then you put them in a cage together overnight?
If that's so, yeah, that's probably a bit too fast.
Ideally slower is always better. You'll want to have them get to know each other over several days (or if they just refuse to completely settle down) weeks. I'd back up and put them in separate cages again, and then start them slowly again in neutral territory: A barren controlled space with no hidey holes, and no 'shared' scents that one can claim over another. They should spend at the bare minimum 30 minutes a day like this, preferably longer. Do this for a few days until they've worked out their issues.
Only after they're comfortable lounging together in a neutral space and you don't have any 'displays' would I consider trying a cage.
Then if it were me, I'd flip flop their stinky blankets around for a day or three. Only once they've calmed down from all of that would I start fresh with a deep cleaned cage and brand new bedding (as neutral as you can make it scent wise). I might even rub each of them in the others' old soiled bedding/poo/urine to mix their scents so they go into the neutral territory smelling like each other. Someone else may correct me on some of this, but that's just a rough idea of a direction to take.
I'm doing intros right now too, so I understand what you're going through.
As for the injury, it's showy but pretty minor. You might want to take him to the vet if you're really concerned. But the vet at most would suture it, but more likely just clean it up and maybe put him on antibiotics to ward against infection.
As for what you can do yourself, here's a link to rat first aid. Scroll down to the injury section:
http://ratfanclub.org/firstaid.html
Good luck!