I recently rehomed a 'retired' breeding queen. I've now had her for 4 weeks and when I collected her there was no visible sign of spaying, or any vet paperwork to confirm this. Her breeder claims she was spayed at the beginning of May. Her behaviour leads me to think differently. We get a lot of bum in the air and howling, and my 2 normally very placid and laid back male cats have become very aggressive around her. Breeder is adamant she was spayed but has no proof. And I genuinely fail to believe all her fur would have grown back to full length in the space between her being spayed and me collecting her. Short of taking her to my own vet, is there any way of telling?