Males can be very territorial and some 1-2 years old ferrets can kill a kit even if its a male or female!
Demon was VERY territorial with Johnny and they were only 3 months of difference ... !!
He was biting him and made him cry !!
He was very ruff
For 2 weeks Johnny and Demon were sleeping in a seperate cage (I put the ferret cage in my computer room and Demon was sleeping in the ferrets room, in the pet carier (it was always open so he was free to go in a litter box, eat, drink water etc
). I was slowly introducing Johnny yo Demon but he was very mad
After two weeks he was letting Johnny sleep in the same cage but didn't want Johnny to sleep with him in the same hammock lol He was still pushing him, hissing, and make him a litle bit cry
After two months Demon starts to "play" with Johnny but they were some unfriendly fights sometimes. Bu he quickly starts to be friend with him because he was learning that Johnny was here to stay and also because they were only 3 months of age difference so Johnny was tuff enough to fight Demon back
I do not recomand people to buy another ferret if they have a ferret under one year old. You should also check the difference of age.
Maybe a 4 months of difference may works but keep in mind that some ferrets will NEVER be friend with another ferret and may kill it if he has to share his cage with!
You should also never put another ferret in your ferret's cage the first weeks! It can cause stress to your new friend and make your other ferret angry. I'm talking for male ferrets because they are very territorial and can be very agressive when it comes to have a new pawl in THEIR home lol
Females are usually less territorial but if a female has been alone for severale years she may be agressive...