I bonded two females quite easily. Ruth Buzzy was a year old at the time and spayed. Beasty Weiners (don't ask) was 4 or 5 months old, not yet spayed. I kept the new one in a cage in the house for a few day and the other investigated. Then I took the two of them to my neighbour's mud room and sat on a bucket for 2 hours wearing gloves and holding a broom. The older one was dominating, chasing, growling, but the room was small and I was in total control the whole time. The new one seemed baffled, "Why is this happening to me? I only want to sit here and eat the broom." There was some fur pulling but I could tell the older one was interested more than anything. Things got easier and finally I took them home and let them out in the house. Ruth Buzzy asserted her authority, the other agreed to the terms, and soon they were friends. They have been inseparable ever since. I don't cage them and wherever I see them in the house they look like conjoined twins. I thought it would be harder. When Beasty Weiners was old enough I had her spayed as well. Good luck to you.