Thanks for your insights.

One of the earlier mistakes we made on having multiple cats is to not have the separation period when introducing new cats to our home. After the our cat Mocha died of FeLV, all new cats introduced to our home were checked by the vet, separated for 2 weeks and were vaccinated. We were lucky that Mini is an adult at the time and is resistant to FeLV. We quickly vaccinate her against the virus after being tested negative twice.

Our place is a bit small to house too many cats. We are working on getting a bigger place so that if we have a baby, we will not need to give up the cats. Also, we would like the cats to have the luxury of playing in the yard. Some of our cats are fat and I think they need more exercise.

I suppose the best thing I can do right now is let the cats learn to co-exist. Other than Mini, all 5 cats got along fine. Maybe Mini will warm up to the marbles once she found another kitten to pick on But really, it does irritate me when they start fighting.

Will put up the pics of the pair of marbles (Pepper OK and Cinnamon OK), Hainam and Hammie soon!