2 male chins fighting

[Sanya]

Hi. I have 2 male chins, about 1.5 years old and they weight 420g and 730g and live in same cage. Last night small one started to jump on bigger one, and they released sounds like you are arguing. Fur was everywhere. I let them out, small chased bigger one. I closed them, and they calmed down. Then, they started arguing again and small one was scared. When he entered the cage and faced big one he freak out, yells, jumps all over the cage even on other chin and try to run away. Other responds... I let both out they eat from my hand and behave normal. Now they are both in cage and they are sleeping, but first big one fall asleep then small one came in.
What can I do?
Sorry for my bad english...

 

[Kansas City Chinchillas]

Separate them. They are not getting along and will severely injure or kill one another. Unfortunately chins who have lived together as friends sometimes turn on one another. Don't be fooled by finding them sleeping together. Separate them now. Hope this helps.

 

[CTChin]

Ditto what Cathy said.

 

[Dreamlite]

Seporate them asap! Once chins start to fight it never ends well.

 

[Cuddlebug]

Yep! Separate them and keep them that way. If you don't you will probably come home to an injured chin or two or one or both dead.

 

[kellylynnmarie]

I had the same EXACT situation... tried putting them back together, they seemed okay for about 10 days and started fighting to the point I couldn't possibly put them together again. I still struggle with them each being alone and in separate cages right next to each other... but I know I could never put them together again. It's not an easy thing, but for their safety, it has to happen.