I have started to type a response to the previous posts 5 times now, but there is a tug-o-war going on right behind me, between a Blenheim and a Tri!

They are noisier than my two sons ever were
I agree with almost everything Phyrie said about neutering. I was trying to wait until Oliver was a full year before neutering, for bone growth and muscular development, but like Kiba, Oliver had a hernia that needed attention. Oliver was neutered at 8 months. He had already started marking a great deal, and became increasingly "difficult" particularly in the management of his love affair with his ducky.
The longest I would wait to neuter a male would be a year, and never before six months, unless there is an emergency. In my experience, some of the traits that a male acquires from the age of 1 until 2, are very difficult, even in the smartest of breeds, to "untrain" or avoid altogether. There are many factors that go into that thinking, but I'll leave it at that, for now.
I agree with everything else Phyrie said. We differ as well on the perfect age at which to bring home a puppy, but as I age, I am starting to agree more and more with Phyrie...almost
I'm sure you'll find the one-on-one time you have now with Felix, as he matures, affords you an opportunity to forge a deep and lasting bond, that will serve you both well on the arrival of a new little one in the future. Henry is at the age now where is he really able to communicate with me. I feel as though I spend a great deal of my time talking to both Oliver and Henry throughout the day. Oliver is happy to snooze while Henry and I cuddle and chat. I must admit though that the snooze is also occurring on or very near my lap. I am often covered in "Cavalier".
I'm enjoying hearing about Felix. Keep us posted Felix and I.
