I have two male cats age 7 years old who I purchased from a local pet food store when they were 6 weeks old. They have been friendly with each other for these seven years, eating, playing, always sleeping together until 3 months ago when something happened during the wee hours in the AM.
They have been indoor cats since we purchased them. They are completely at odds with each other now, hissing, etc. I have them separated in two locations of my home, which was suggested by my vet. I have been giving Prozac to them per my vet.
I do not want to let them fight it out because one is 24lbs & the other 12lbs. They were both spayed. A female cat is also in my home, which they have no problem with. I have had many cats in my lifetime that all lived together with no problems.
I am completely perplexed at this problem. I wonder if they will ever be friendly to each other again. Both are friendly with people. Do cats ever forget things that would upset them, or do cats have mental breakdowns or go insane?
Thank you for any answers or suggestions.