Hi Everyone,
So I’ve been having a really weird experience lately. I recently brought home my newly neutered male from the vet. When I took him to the vet, his sister rode alongside him and they have been getting along extremely well. At home and at the vet they have been grooming each other constantly. They seemed to be doing very well.
Fast forward to now after his neuter surgery. I took them home together and tried to let them out together. Almost immediately, my unspayed doe started humping my neutered buck. I quickly took them apart and separated them again. I tried once more this morning and the exact same thing happened. Immediately she mounted him. It’s like she doesn’t recognize him anymore! Could this be because of the surgery or the vet visit? I’m just curious as to what has happened since she NEVER has tried to mount him in the past. Additionally, like before, she still grooms him through the cage bars if one of them is out and the other one is having exercise time. Talk about bipolar! They were always super friendly with each other. I’m just worried that they don’t love each other anymore 
Thank you for your help!