my cat Aden and Koda are about 7 months now and I was going to take them to get neutered by a German vet. She's a good vet and I've been to see her a couple times but I was wondering what questions should I ask her about getting them neutered the before during and after process of it, and would it be smarter to get both Aden and Koda neutered at the same time or one at a time. Also Orion is 10 weeks can he be neutered soon, his got a not really aggressive streak but can be mean to my other boys and I'm hoping neutering him will calm him down at least a little bit, but I don't know how soon he can be neutered. Thanks for any advice.