Thread: Two fixed males still fighting, MC starts it!

Merlin continues his pirate attacks on Sampson. Last night was especially vicious and I'd never heard so much ugly snarling. As usual it ended with Sampson running away and licking his wounds while I plucked his orange fur out of Merlin's white paws. They are both fixed, and while we do have two fixed females I wonder if the conflict is because of the girls? Sampson and our Bengal mix Rose are close buddies and they snuggle together while Rose grooms his face. Merlin sleeps most of the day and appears to be a lazy old cat, but then evening comes and he's on the prowl, stalking Sampson and terrorizing him!
I've also noticed that Merlin utterly refuses to cover in the litter box. Even when he pees he just does his thing and jumps out.
With temperatures here below zero and wind chills at -30 or lower, allowing Sampson outside for respite is totally out of the question. How do we stop the war with the boys and survive this cold snap cabin fever?!!